I Like it in general

First a small comment:
HX on your turn, should it have a "choose 1, 2 or all 3"?
And what is the HX for the other players after the first 3?

Second:
My game, my rules - I like the concept behind the move, but is it a little overpowered? Currently if you stumble upon a lone gun lugger Large gang vs lone opponent gives -3 harm. Unless he shoots you with grenades there is no way to harm you. Or is this intentional.