I really hate "meta build" aspect of ESO.
Especially, PVEver vs PVPver problem.
It totally divided ESO 2 different world, and never cross.

Sometimes, experienced PVPver say "Let me help your build".
Me: "No thanks. My character is not for PVP contents, but for the PVE role".

ZOS also divided PVE player 2 types. One is very MMO people, one is solo traditional TES fan.
It's also never cross.

We're playing same title, but we never cross. That's ESO.

Best:
Lore. The IP itself is what brought me to this game. There's so much lore, and a lot of it is quite compelling. There's ample room for interpretation and a lot of mature themes to explore. I think ZOS has done a pretty good job of building upon it and adding to it.
Zone design. It’s an absolute treat to explore and get lost in this world. I am always impressed by Tamriel’s art and assets. There's so many zones to slowly explore and savor.
Soundtrack. It is exquisite. I pretty much bought Gladesong to have my own private place with that music. And with combat music being optional, it’s even easier to enjoy the music.
Character customization. I love the sheer variety of races, classes, outfits, mounts, and skins. There's so many ways to personalize our avatars. Endless experimentation.
Horizontal progression. Compared to WoW and other more traditional MMOs, I like how relevant the content stays as you level.
Diversity of activities. The main reason I've kept playing - there's such a variety of things to do. There's group activities, there's challenging solo content, there's chill questing, there's crafting, housing, etc. No matter what my mood is, I can find something to do that vibes with me at that moment.
Dungeons. I really enjoy dungeons, and I think it's some of the best content in the game. There's meaningful challenges and enjoyable mechanics in a lot of them. I really appreciate their creativity in these, especially Blackwood and onwards.

Mixed:
Storytelling . There's many good stories and memorable characters in ESO. I think base game through Elsweyr had stronger writing than the last few expansions. Even still, I've enjoyed stories like Blackwood and High Isle, despite some of their shortcomings. Some of the new stories suffered from some pacing issues and bringing together all the elements in a satisfying way. Still, the world building's been great and I find something to enjoy in every release.
Rewards. The game is rewarding, in many ways. Between antiquities, motif hunting, and achievement tracking, I find there are hundreds of hours of content to chase after. However, there's still a lot of activities that require too much grind or crowns to get.
Housing. The base game has oodles of houses, but from High Isle onwards, there's been very little permanently available houses. There's also comparatively a small amount of medium sized houses. Despite that, decorating a house is an absolute joy. I'm excited to see what this year's update will be.
Events. Events are an engaging way to shake up one's daily routine and create opportunities to make gold and catch up on stickerbook and other content. My main criticisms are they're too often, ticket cap is too low, and the style pages drop too rarely.
Community Management. I'm basing these sentiments on what I see here. The CMs largely do a good job when it comes to posting official links, patch notes, and helping players get tickets moving. Especially since @zos_kevin joined. But they could improve updates on older bugs, lighten up on moderation here and Twitch, better handle controversy (U35, AWA, certain tweets, the endeavors and crown store issues last year), and let us know where things (fixes, overhauls) are between releases. I also think they should be doing more external news roundups (especially if certain interviews answer questions frequently asked here) and have some visible engagement on pts feedback.
Combat. When it works, which is most of the time, it's quite fun and fluid. However, I often run into situations where my skills just don't fire. Some of it is skills tripping over the GCD, which isn't communicated by the game. Some of it is combat bugs. Like, where my toon will start the animation and just twitch instead. I have yet to reliably replicate the issue, but it's a nuisance to deal with. There's other times where my reticle is off slightly and my whole rotation is borked. Meanwhile, I've seen skills go way out of their way for some critter. Other than those issues, I really enjoy making builds and playing the game.

Worst:
Navigating the DLCs purchases. I don't mind the a la carte approach per se, but I think the way content purchases are setup just leads to confusion. I'm always seeing threads on Reddit asking how to get certain classes and DLCs and it just seems like the content is broken up too much. Which leads me to my next point...
FOMO. There is way too much of a reliance on timed deals. It burns me out sometimes. I wouldn't mind if it were just holiday stuff or the one-off deal here or there. But it's not. It's major swathes of content like housing and mounts that are timed deals. It's a little discouraging to have a game with such great customization and I can't buy or earn a lot of it.
Character Bound Armory & Outfit Slots. For all the hard work that went into making AWA launch, feels like a missed opportunity with these two features. They really should be account bound for how expensive they are.
Nagware NPCs. I really don't like the quest givers that follow you around (that's mostly in base game) and the multi-scene NPCs like Leramil that show up in 10 different places. Plant 'em in one place and let me do the content at my own pace, please. And please, find a better greeting than "You there!" for the next expansion's quest giver.
Horse Training. I'm thankfully done with this, but this needs an overhaul. I don't see the value in it. At best, it should purchasable in one shot, just like the bag and bank upgrade systems, which are the same age. Have content convince me to login daily, not horse training.

Best: Combat & Camera options (variable zoom and instant 1st/3rd person swap)

Worst: No Class Change

Love
- Atmosphere, I love the looks and sounds! Especially in newer zones, older ones are a little worse off in terms of looks.

- Lore/Stories, always liked ES' more and ESO has some good stories I really enjoyed.

- Housing, it’s fun to decorate your own space to your liking and visit other people’s places!

- Customization, I love the amount of customization there is, being able to mix and color different motifs, markings and so on!

Dislike
- Customization, also dislike parts of it, mainly body markings removing the fur/scale patterns for Khajiiti and Argonians as well as not being able to mix Skins with Markings. Especially ironic for Argonians as they got the Bright-Throat skin alongside multiple Bright-Throat markings in the same Crown Crate… while not being able to be mixed wjth each other even though it works fine for NPCs.

- A little specific but the Vossa-Satl and Mire Drum being Mementos instead of looped emotes like all the other instruments. As an Argonian enjoyer, very sad.

- PvP, that’s just me not enjoying the gameplay of PvP. (Which makes me wish we got a PvE version of Cyrodiil/Imperial City)

- FOMO, just terribly anti-consumer, with lootboxes also being tied to it. Worst offender though are the never returning collectibles of daily log-in rewards, which is especially sad if you lock a houseguest, like Thunderboots, so no one after that can ever get him.

Best- art and no sub

Worst- game feels unfinished in so many areas.

Best

Story/Overland questing


Worst

Combat



Pretty Simple really...

Best: lore & story stuff, pvp, housing.
Worst: fomo & monetization, class balance, performance.

Best/Love

• Character Creation/Design:While there might be some things I wish I could add to the character creator itself, the wide variety of appearances, motifs, and accessories available make character creation in ESO an art form. It's a joy to walk through a world where I can make a character look the way I envision them in my head, and I love seeing all of the unique ways in which other players express themselves.
• PVP: I came to ESO fully intending to do nothing but PVE, but then I got a taste of PVP in my first Midyear Mayhem many years ago...long story short I now have EMP and am rapidly heading towards AvA level 50. I love everything about a good full scale battle in Cyrodiil. Best PVP of any PVP game I've played (When it functions...ahaha...haha...>.>; ).
• Immersion:From housing, to questing, to overall world design- even Cyrodiil overland, it is easy to get lost in ESO for hours at a time immersing myself in the world of my characters and their stories. I love every ounce of it. No other MMO I've ever played (and I've played tons of them) has provided me with the kind of engaging experience that ESO does. It successfully mimics the feeling of a single player game, without being single player.

Worst
Most players have already posted some of the games most obvious issues, so I'll list a few of my more personal annoyances that never the less impact gameplay.

• Event rewards that look too similar to each other: This is a fairly recent problem. We've had a lot of motifs that look very similar to one another, being slight variations on the same theme or look. They chest pieces, in particular, tend to be very flat and mold weirdly to the characters, even when they are different. I'd like to see some better quality control when it comes to cosmetics. Tattoos and body markings, in particular, have been making me question why they were implemented when they look unfinished, or like nothing more than photoshop brushes stamped on the character model. Please, consider giving us tattoos that are smaller, more subtle, less garish, and more immersive.
• Inconsistent Hair Colors: This is particularly bad on some hair styles, but not others. My high elfs normal hair color is the lightest light blond on the character creator, nearly white. Most base game hairs and some older crown store hairs display his hair color correctly. However, recent hair styles give him hair that is not blonde....its a dirty gray, like the color of an old mop. It lacks consistency with the actual color chosen on the character creator (even the color in the little box on the character creator looks nothing like the color displayed on these hair styles). Please, please look into making these hair styles match the correct hair colors when they are implemented. I know other players have this issue as well. Its been a pet peev of mine for ages.
• Sweeping Changes: In spite of a huge amount of negative player feedback, sweeping changes are often made to the game which impact important aspects of game play. Many times, players come up with better solutions to problems than what has been implemented on the test server, only to be repeatedly ignored. AWA comes to mind. So many players had better ideas for how AWA could have been implemented, but to no avail- we have the system we have, unfortunately, and it will forever be a shadow of what a good Achievement system really looks like.