I don't know, it might be better to have a greater power reduction, or at least balanced between power/speed. However i'd be happy with anything in that regard.
Another idea i had months ago that didn't get much traction, was having individual stamina for each limb for ufc 4. I thought it could be combined with individual limb health. So if you block lots of high kicks on one side, your arm might get injured and take more stamina to throw strikes from that arm or have more bleed-through. It would force people to spam the same thing less as well, because individual weapons would become less effective over time.
This would also allow you to gas a players arms by grappling them so they would be less effective with power punches.
If you added that to leg health, it could start draining more stamina to throw strikes from a damaged leg.
I think we really need a return to separate stats for each limb at least. What would be cool is if we had different speed for each limb too. This would greatly differentiate switch stance for some fighters. Maybe even different level strikes when in switch stance.