thread I made on changes I believe should be done to the UI and HUD, check it out: ( shameless necromancing )
I wouldn't remove whispers. True, they are annoying to look at especially when people use them to rage, call names or tell you their father is Matthew Scott and he'll ban your account.
I use whispers to settle deals while trading, chat with other players... It's far too useful to get removed.
Emojis. Sure, a lot of games have them, and a lot of people like them, but they should be added as a toggle switch just in case you don't like your ascii faces turned into cheesy icons.
Dragging around the chat, hiding it, hiding/ignoring certain chat channels (from whispers to yells, district chat...), setting the transparency of its background, switching around the colors of each channel... These are changes that should already exist in the current game.