Larian said missing isn't fun (translating = missing too much increases combat time, often less fun and makes your character feel less able).
If they change hit chance (with other balancing) they could (for E.g.) change a fight that might take 10 rounds only take 5 rounds (without a significant change to win probability).
Or increase hit chance and decrease effect of hit so its the same rounds of combat.
Care needed with Great weapon master/sharpshooter as the increased dmg should be offset by decreased chance to hit.
And 5e is designed with the concept of bounded accuracy. I'm not a 5e expert... What would happen if they just gave all allies and enemies +25% chance to hit?
