Since this is a bit of negative critique let me first say that I love the game so far, and it seems there has been no or little compromize towards making BG3 a game that the devs can be very proud of.
However, there has been some critique of the combat system so far, one issue being that it was possible for a low level monster or character to instant kill someone with loads of hit points simple by pushing them from great height or into water or lava. I once played pen and paper ADnD with some guys who used to fondly think of the times when they constantly got up at night and slit the throat of party members just for the fun of it. That kind of game play may be fun for some yes, but it completely ruins the game for others. Think of all the hours you spent building up your character so that he could be a great hero. No shame in being killed by a mighty dragon, but if any low level goblin who comes along can just push you off some edge and that's it then it stops being fun. No need for a complex levelling system then.
So it annoys me when simple goblins are equipped with high damage area effecting arrows. Or when how you do in the next fight depends on what you have picked up in terms of one time use items. 'Yeah, I found this bomb in a random stash, threw it at the enemy, and boom the fight was over.' Is that really the story you want to tell your grand children? 'I spent years practicing my sword fighting skills, but in the end it really didn't matter.'
So yeah, instant kill can be fun, but it is out-of-context fun and I think many of us just find it to be stupid.
This was one of my very few complaints about what is otherwise (so far) a very great game.
