I'm really happy there is continued interest in the game. While there are some people that have really criticised the grindiness of the gameplay or the difficulty, I for one really enjoy all of it. If I wanted to just watch porn there are plenty of other places to go. I think adding stuff and/or extending the endgame is really important for this game to live on.
One thing I may suggest for an expert/insane difficulty or something? All/some girls' stats should be hidden, at the very least in the recruitment page. The price alone for the girl should give you an indication that she should have some advanced stats. I guess like in real life, unless the girl is famous or actually does stuff in an audition, are you really going to know if she is really good at sex etc?
You could take it further and give no colour indicators for skill levels or openness in the main game screen. You just need to remember who is open enough for various acts, who is good or not. Basically the game would behave as now except if you make a girl try to do something they aren't willing to do, there is a (big) penalty to your rep etc. Obviously the negotiator would still be able to push the girl into doing something, but at insane difficulty maybe not reduce the penalty to zero. I suppose you could show her stats in the staff screen so you see how good she is, train her etc.
As someone who has played this game a lot a few things to make things more difficult or force me to change the way you have to play would be awesome. The randomiser has made a big difference. Thanks CaptC.