Not sure how I'm going to approach martial arts for my Bushi d6 game. As is, there's pretty much nothing for it in the Mini6 rules. At this point, I've just ported in rules for choking, slams, and wrestling from d6 Fantasy. I may just leave everything as the Brawling skill, and leave it at that.
Maybe rename it to jiujitsu, but not really change anything else. With the combat maneuvers, I'm not sure going very specific for various flavors of karate is worthwhile. At best, I might have Brawling subdivided into wrestling and striking, with each gaining a +1D or +2D to specific maneuvers.