Teacher vs students is good for me. A 45 sophisticated lesbian literature or mathematics teacher vs young and nasty lesbian tomboy 16-17 years old, heavy metal grupie. A rought, evenly matched catfight. The teacher is on the edge of defeat many times and win only after a hard struggle on the last and desperate round. And the next fight is the mother or the older sister seeking revenge.
Another fight could be a challenge between a female cop vs male or female thief: The thief win: he or seh can fuck the female cop. The female cop win: the thief confess all he or she know.
Another story could be a rich lesbian bitch who choose her four housemaids by her ability to catfight and sexfight. They win a lot of money but they had to catfight and sexfight each others. The champion win a lot of money and the right to fuck the rich bich, but the last clasificated is fired and reeplaced.