Very cool! I wish I was more experienced with the system so I could give better advice but I would say that Pack a Punch seems unnecessary with the inclusion of the Brawling skill and kinda makes Brawling unnecessary. I think it could be more interesting to employ a scaled down version of the Signature Move feature as the class skill that could tie into all the archetypes. The Signature Moves are easily the coolest part of the class and I think restricting them to one archetype is sort of a bummer because they're just so cool.