Wow, these are some great suggestions! And like I said, it's interesting that some people want more sex in their catfights and some want no sex at all!
Sometimes it's a very fine line between the two, in my opinion. For instance, in the story "Shaming the Liar" in my new book, after the loser is beaten in a gym in front of the gym's cleaning crew, one of the cleaners sticks the handle of a toilet brush up the loser's pussy, then up her butt. It's done purely for humiliation, but it can't help having a sexual overtone to it. And once a woman has been beaten and stripped naked, it's really hard for ANY punishment to not have at least a slightly sexual overtone.
Anyway, keep those great comments coming! I love reading them and you're all giving me great ideas for the next book!