I can honestly say, that over the last few years my thoughts of what's hot have turned more frequently to women raping women. I have to admit though, I still like the tough girl thrown into a situation, whether it's an aggressive female cop, prison, gang initiation, sports/Olympic team, a blackmailing female boss, or any setting where an aggressive woman or women rape another woman.
The best 'turn on' features for me are forced oral, forced orgasms, gangrape, insertion of objects into an unwilling pussy or ass, tearing off clothing and humiliation.
Just saying...