I really love your work, but please please please, for every game you are going to do, DONT use any D&D ruleset. It's byzantine, counterintuitive, and very frustrating to try to figure out in a videogame. There is not a single fight in BG3 where i fully understand what's going on. Divinity 2 was much more understandable.
Two more suggestion:
- surface effects were more easy to read in Divinity (area covered by fire, or poisonous gas, or else) than in BG3.
- give players the possibility to buy and customize a home, a castle, a ship, and to fill with NPC that live there and do stuff even when you are out doing else.