If people think it'll create some imbalance (I personally don't) then just leave the default miss feature on and forget you can even turn it off.
That it would create an imbalance isn't really what they were saying, it's that it would make armor, shields, strength, dexterity and every aspect of level advancement (other than hit points) irrelevant in combat. In other words, it would make it not a D&D game when it comes to combat. Maybe it would be a win/win for Larian to make a non-D&D mode and a more legit 5e D&D mode. Although the former seems sort of silly in a D&D game, but whatever.
