Exactly, BG3 is an amazing looking game with a great story. If the core combat was better, this game would be a master piece in my opinion.

I never played 5e or any dnd games but I played solasta after reading the forum posts about this game. First I thought "this game was lame" but when I got to combat, I understood why it was praised in this forum.

Is solasta perfect ? No.
Is the combat fun ? Yes.

Bg3 can even be better than solasta in combat, they just need to accept whatever dnd 5e rules are. From what I saw the combat of 5e is not bad at all. If solasta was faithful to 5e rules.