I've always wanted to see a realistic take on an AU HP fic where Voldemort never existed - because say what you like, the HP series was always about Voldie. How different would the world have been without the events he set into motion? Or better yet, how similar would it be? How much would the characters we love be altered...yet stay the same?
I've noticed a lot of people hate the idea of throwing canon out the window...I gotta admit though - I love me some AUs, whether they be cracktastic or create a wholly realistic world. And ultimately all of fanfiction is an AU world of what ifs.
Anyway, so if you were going to write a "Voldie? Voldie Who?" fic, what would it be like IYO?