Oh man! The list is long on UI changes needed:
1. Party Mode Button needed. Click button, you're in party mode. Click portrait of character, you're in solo mode.
2. Stealth Mode Button. When in party mode, whole party stealth's.
3. Why are characters now defaulting to ranged weapons. I constantly have to switch back to melee.
4. Can't switch characters during dialogues so I can have my characters with better skills use those skills. So if my rogue has good stealth and my fighter intimidate, and a dialogue first requires dialogue and then intimidate, I cant have the rogue deceive and the fighter intimidate.
5. Initiative is jacked up. Constantly skips turns and if I surprise I can get in like 3 attacks with my surprise attacker lots of times before an enemy goes once. Then all my party members can stealth around freely and do whatever they want while all enemies are locked in battle with the first.
6. Jump should not be a button. I should pick where I want to go and if my character needs to jump they automatically do so. Disengage ID the button and should not be tied to Jump so we arent jumping around the screen like super heroes.
7. Magic Spells should have their own menu and be organized so you can find them easier.
8. Same with special abilities like Sneak Attack or Menacing Strike.
9. Your character should not stop whenever you hover over an object.
10. Your character should not autoattack by default an explosive barrel.
I could keep going, but ultimately yeah. Try Solasta. They did a great UI. Its a bit big and could be smaller, mind you, but it is well organized and easy to use. They could also use some hot keys. Still, much better than BG3 right now in terms of UI. They even have reactions you can control and when you shove you choose either to knock prone or push away.