Look into Kali. I have studied BJJ, Krav and Judo. Kali has been the most benefitical to my leathality. It is weapons based but the skills all translate to empty hands. It also works at all ranges. Watch some videos of Doug Marcadia. It is amazing how differently my body moves and how much more confident I am with a knife, stick, fist or what ever. Much more finess that ballistic.