I just fucking hate those overly used arrogant 'noble' bitches with that annoying laugh they always do. Yeah sure, some characters should be arrogant for the sake of plot or to make them fit in but does it have to be that stereotypical?
I'd like to see a good harem show where the main char isn't a dense fuck and is actually tormented by all these girls loving him while knowing he has to chose one. The only one I can remember was Boku no Tomodachi ga Sukunai. At least I think he was pretending to be dense so he wouldn't have to deal with it.

And of course....loli's. I never understood the need for them. But that's just purely personal. Some people like em some don't. I am okay with that as long as it's not in any sexual way. Reminds me too much of pedophilia.