Cat called a shot, "scratch to the face" and I did some research. If she got a critical hit, the location of the deep wound would be that place.
I don't think we should be calling shots as a regular thing though. It sounds gimmicky.
So I would like to give it a purpose and a penalty.
This is akin to disarming. If you call out the sword hand to make them drop it.
Disarming is something not everyone can do. It is a feature of a Battle Master fighter. They get superiority die.
So if you want to call your shots, then I want to at least give the hit less chance of striking or have less impact. So it could be -d4 to hit or -d4 to damage but then you get to call the shot and in the case of claws to the face, in the future it would have a chance to blind. To the sword hand it would have a chance to disarm. In the leg it would limit speed for a number of turns etc.
Comments?