BUT, how do you take away somebody's hands? Cut them off? Then they can't fight anyways. There's no penalty for specialization in HTOH like there is with a weapon.
I think the general idea is that people like choices, people like specialization, and encouraging that is understandable and healthy.
I think that if you specialize in something, it should be possible to deprive you of that thing. In this context it doesn't make sense to let someone specialize in their "krav maga".
It's not built for hand to hand, and this would require all new code, code which we don't have time for right now, and I don't think it's needed. Martial Arts and Brawling are already strong, and likely need a nerf to spread around the consistency of high end attacks being hit rather than given a method to be made stronger or even still, a nerf needs to happen before new code is invested in to allow further UE investment to strength it.
Hand-to-hand fighters are perfectly free to specialise in their choice of actual weapon. Maybe one day there'll be more physical options instead of just the two or maybe they'll be customisation options for styles beyond what's available now. Those aren't pressing issues, though.
Common sense would tell you that if you're using your most skilled tool of the trade, that you're likely going to be better at disarming someone, especially if you're more skilled than they are in the weapon they're holding that you want to make them drop.