The hotbar for spellcasters is a bit of a mess. I have to empty it out and rearrange things manually every time I level up or overhaul my prepared spells. I'd love a dedicated spell bar with them listed by level. It's cumbersome to add a 1st level spell cast at a 2nd level.

Explaining what certain things are on the character sheets or weapon attributes is also lacking (I needed to read my PHB a few times to remember). If my own selected proficiencies are listed (and not just the bonuses to all proficiencies), I haven't found them yet.

Chaining and unchaining? I'm used to it from DOS, but I find the need to splinter someone off a bit more frequent here than in Divinity. It could be smoother. Less "sticky" and more "snappy," if that makes sense?

Aside from those and some wonky camera issues in caves where something is overhead, I actually love the UI.