Hmm right now I do not have time for a fast moving lots of posting games, as I have many games going. However just an idea to bounce around, if there is someone who does not mind a post a day type thing or even if there are two people who want to make this idea their own, I would not mind reading a well written storyline :)
Here it is,
Set in some fantasy land, a Prince, known for his cruelty is set to be put in power since his father, the King is ailing. There is the leader of a small rebellion who happens to be a powerful sorceress. Fearing her the Prince has (either one very powerful wizard, or a small group of normally powerful wizard) trap her in a wizards warp (magical barrier that prevents magic to be used) after this however the story developes for a bit..but eventually the Sorceress escapes, and to extract her revenge she casts a spell on the prince..By day he is still the Prince, still a man..by night however physically he turns into a woman...only physically though mentally, emotionally he is still very much a man a Prince..but since no one believes that this very attractive woman is the prince in reality, at night he is submitted to much of the same treatment he and his entourage treats women.
This is just a mild outline..a sort of interesting vengence. Would be NC most certainly and depending on the writers whatever else..