A damage rating? Nah, that's a disaster waiting to happen. You think fighters are gun shy now? Just wait until they have to worry about cuts and black eyes.
Get rid of "Octagon Control". It means fuck all. Stop scoring takedowns, as if they were knock downs. Start rating defensive maneuvers, like stuffing takedowns, and avoiding submissions. Also, start rating aggressive maneuvers, like sub-attempts, and effective clinch work.
Overall though, the best solution would be to get judges who knew what the fuck MMA is all about.