Body punching is ok, as long as they don't lay it on too heavy and forget about the hair-pulling and wrestling, which are the tactics I enjoy most in a catfight.
Women punching each other in the face though, is something I don't like to see. A lot of the time, they can't punch hard enough to really hurt each other. But with heavy handed women you get bruises, cuts, black eyes etc, and injuries like that take the fun and sexiness out of the fight for me.
The rules you have in place at the moment are producing some really good scraps, and if it ain't broke, why fix it?
I wish you would get rid of the ring though, because the ropes sometimes obscure the view and prevent the cameraman from filming from the best angles. Other than that, I don't think you need to change anything.