I would love a fishing skill line and a rework and or expansion of the fishing activity.
For instance , expand on fishing species we can catch.
The ability to upgrade fishing rods, like grey , all the way up to gold. ( A mythic fishing rod maybe also? Lol)
Also, make fishing it's own full on mini game within the game. With on screen HUD for fishing , special fishing music and dramatic camera angles when you catch a fish.
Another idea is opening up the water ways for boating. This will allow for more fishing spots and perhaps the ability to have to CRAFT a fishing boat!
Basically, make fishing so fun and rewarding and satisfying that some players will start ESO just to be come fishers!
Ok also... Allow the rare occasion of catching special items, this can be valuable and also very funny. For instance , you can catch a rare jewelry box, or an old boot. All which could be sold to box merchants or on guild traders.
And also...the ability to earn a special rare and hard to achieve Fishers SKIN.
Much of the ideas above are inspired by my own real life fishing, and games like Zelda 64 and Black Desert Online.
Fishing deserves more love..it's just a fun thing in a game if it's done right. I'm just saying fishing could be enhanced to be so much more relaxing , and even exciting.
Thanks!