Some terrible UI "features":
1. camera centers on the selected unit at the start of the turn. I often look around the map during AIs turn, and it's just irks me a lot when suddenly map moves to a place i don't care about atm
2. auto unit cycle (doesn't irk me anymore since i disabled it
) With this "feature" on you don't get to see the damage/culture/gold/faith you got with the attack as the game will cycle to a unit on the other side of the map immediately after issuing the order. But when you attack with your last unit needing orders you'll have to wait for those numbers before you can click next turn.
3. leader screens popping up. I move my scout 1 tile, meet an unmet player and his screen pops up. No, i am not a friend of liberty, go away! I'd like to go back to using my scout now, thank you. Same thing with leader screen popping up during AIs turn. I'm looking around the map and AI pops up, interrupting me. I'd love to see all leader screens replaced by a simple notification on the right (game would pause if it's an AIs trade request during their turn, but not for things that don't require your response, like the "very well" and "you will pay for this" responses which have no impact on the game )
3. diplomacy UIs:
-while it was improved with BNW it irks me that i have talk to AI to see if we have a DOF (this could be shown next to shared embassy/open borders/research agreement)
-CS luxuries/resources and quests are shown in separate windows, would love to see these two shown on the same screen.
-Influence with CSs can only be seen in tooltips, influence could be shown on every CS related screen without me having to mouseover stuff.
Still love the game, those are just minor annoyances, I'll get used to them eventually.