In addition to everything else mentioned, how about hand to hand and the various weapons to accomodate such styles:
Knuckles
Fist Wraps
Enchanted Guantlets
Claws
Punching Daggers
Magical Augmentations or other supernatural augmentation. (Tattoos, curses, etc...)
I would appreciate many forms or if need be, reduced to two styles: Martial Techniques and Brute Brawling.
This role could bring a type control, mobility and resilience to the party.