What sort of low-key things do you wish could be added, not for gameplay mechanics, or balance, but just immersion?
I wish that after saving Bangkorai, I could be Queen Arzhela's court wizard. I wish she could be my patron and give me quests (just low-key, repeatable ones).
In fact, I wish that factions were a thing. I wish we could join, say, exclusive temples, or Daedric cults. I wouldn't mind if the basis for these was just daily quests (with good rewards), and low-key perks for building rep. I wouldn't mind if the daily quests were super low-key, just reasons to go to the many fantastic delves, public dungeons or whatever (like Mages and Fighters Guilds currently do, but with more location possibilities). But having to choose which ones to join would make me feel more like I'm part of the world, and that my choices reflect the character I'm playing.
I also wish that after completing, say, the Markarth questline, I could be dubbed Clanfriend, and from that point onwards, Reachfolk that I encounter in the world would have yellow auras, so I can choose not to fight them. I'm precious about Reachfolk, and I'm sick of getting accosted every time I try to get through Jackdaw Cove, but I imagine this sort of thing could be extended to other factions- The Blackcasters, the Wood Orcs, whatever, really. In an ideal world, it could even be extended to overland faction mobs in Cadwell's Gold and Silver- that was always a stretch for people!
I wish that there were roads between zones made sense. Especially ones that take you between provinces. These should be major routes for traders, caravaners and other travellers. Its one of the things I think they did ok with, base-game- they *mostly* make sense. But there should be, at the least, checkpoints where roads move between provinces or alliances.
I think that there are still obvious connections missing between zones- I really wish they'd put gates between Alik'r and Fallen Wastes/Southern Bangkorai: As it stands, you're completely dependent on wayshrines right now if you want to get to Alik'r. I think there should be some sort of connection between Blackwood and Murkmire: the ecologies feel similar, with a gradient from Gideon, through south-eastern Blackwood (I don't remember the name of the subzone!), and into Murkmire proper. Having some sort of passage here would allow us to really appreciate the thoughtful world design. And honestly, while I'm just running overland, doing dailies here and there, and farming mats, I tend not to use wayshrines, so it would give me more reason to even go to Murkmire.
The other one I'd say could really use a gate is between Craglorn and The Reach. I think that north-west Craglorn is meant to be kinda Reachy; at the least, it abuts directly onto it- you can see the landscapes are quite similar, despite the different times they were designed, and if you explore, you can see a valley directly North East of Dragonstar Arena that leads northwards. The region is supposed to straddle the border, so it would make sense to have a pass through here. Likewise, when you explore the south-western Reach, between Briar Rock Wayshrine and Vat Hollows, you can see several spots where passes or gates to Dragonstar would make sense.
Related, I'd love to see road signs that orient you in the world. It would be cool to see signs pointing to Imperial City in Craglorn, or Mournhold in Shadowfen.
Just some thoughts- I don't know if it can even support conversation, but I'd love to hear about the sorts of things other people think would really add to Loreplay and immersion.