The missing piece in the mma jigsaw. I predict that knees to the head on the ground will become the norm soon, when I don't know but they will come. Whether or not your a Pride FC fan (most secretly are) you got to sense it's the next level in MMA?
I would suggest that mma fighters and coaches start preparing or at least considering the game with these rules. As the knee strike has always been my favour technique I have been working on these on the ground to the head at my SSJ gym for a while purely just out of curiosity and its a definately game changer.