This isn't the biggest deal, but it's very frustrating to have a character accidentally move when trying to attack an enemy due to animations, or camera positioning.
It would be nice if during combat we had a modifier, like SHIFT, that acts as an 'attack only' filter. With ranged characters it kind of works like this if you hold down CTRL, except you can still attack anywhere which is different.
So during combat if you hold down this modifier, you can only click on enemies. This would eliminate any accidental movement, is out of the way from other binds, and is easy to use.