maybe add a dojo where we could train to improve skills/ stats or get more skills and possibly spar against opponents we can set the level of. Though for skill ideas I think those should have two categories universal can be used by all paths and path specific.
For basic universal skill idea say a guard skill that raises defense by 15% lasts say to 4 round with room to improve either it's defensive capability or duriation definatly be helpful when your trying to heal and the enemy does slightly more damage than you can heal. A martial arts stance skill which boosts base damage for a few rounds.
While a path restricted skill say counter it either be locked to the muscle path or wg path. Pretty much you deal back part of the damage delt to you. That's just and idea for an example.