You can only pick one thing that you want improved, either a lacking feature or a completely new one.
Please avoid giving more than one idea, I think it's interesting to highlight the single most important thing you think an improvement is needed on.
The 20 sided dice to take a backseat and stop covering our screens with them..
Make Sazza and Nettie Companions..
Make Gnome and Barbarians playable
Add levels up to 6th like Solasta..
Remove DoS 2 stuff like height advantage and barrelmancy insanity..
Change spells skills and monsters back to default.
Disengage should be thief only or monster traits etc.