In a better timeline, they would have kept and doubled down on the dice-based to-hit system which comes straight out of classic D&D, but solve the mismatch with live 3d action by simply transitioning into a turn-based mode during encounters. Then we'd have a much better series and possibly would have avoided their slow slide into being an incredibly boring developer.
BG3's systems showed that turn based is still incredibly engaging, so maybe the industry will finally course correct and dump the trash genre of action-RPG.
"But I don't like when my character's skills, attributes, weapons, and other factors determine whether I hit my opponent. I want it based on my mindlessly repeated button reaction speed derived from rote muscle memorization" ... okay, then stop pretending it's an RPG when that's just an action game with some leveling on top for bonuses. Hell, even the worst dice systems feel better than mushy combat of something like Skyrim.