It's no good for freeform.
While location based damage is cool and all. I'd rather it be used as a penalty condition you get from being hit.
Having to choose where you're gonna aim isn't terribly conducive to trying to do a cool fight unless that aimed part is being used to do something.
Also you got some things to keep in mind with the freeform audience.
First thing is that a chunk of them are deathly afraid of mechanics no matter how simple it is. And or dislike the chance element because they're shitters who can't stand the thought their precious character might not have their way.
Also due to the various genres in freeform that can give you super powered characters. It would be an imperative to figure out a way to do "powers". Powers being magic, super powers, and the over the top anime fighting moves.