I completely disagree with you on the core mechanics of D&D. It isn't my favorite TTRPG (though it is my favorite version of D&D) but it's pretty good on combat for the most part. That said, I am also thoroughly enjoying the combat of BG3.

There is some polishing here and there, but nothing too big.

The only issue I'm having right now is with how they implement skills in some of the dialogue trees. Everything else is lovely and I'm hoping to see subclasses and races from the supplements further down the way.