Hi there!
In lack of any section you can make suggestions or have a general talk about the game, I post this here.
What I find very conter-intuitive regarding the UI is selling items and switching playstyles. Fortunatly, these two are related, so the problem can be fixed with one solution.
First Problem: Let's assume your character is skilled in two different ways, Tank and Damage Dealer for example. This means you will have two different sets of gear (and maybe even more weapons) and this means, in ESO as it currently is, you will have a hard time selling stuff. You will always have to double- and triple-check which item is from one of your role-sets, and which item you can sell.
Second Problem: Actually switching roles as it currently is in ESO is - let's not say "a pain in the ass" - but it's overly complicated. Not only you have to search for your best gear-pieces (Hadn't I got an update for that piece of gear an hour ago?!) but you also have to reassamble your hotbars again, which is also not that intuitive, as you have to switch through a lot of different skilltrees and skillsections.
The solution is pretty straightforward:
Give us a solution to save gear-setups and the related skill-setup and switch them easily. We should also be able to give them a name and update them. And then give us a hint when we try to sell an item currently used in any saved setup.
Thanks for reading