Well, Tsunderes function similar(I even created two OCs with such traits, or tried to)and it can get boring. All in all it depends on how the character is written or presented. It's not because of the Stereotype(e.g. I mostly don't like Harem-Protagonists because they're poorly done and not really for being a stereo type(I think Rito Yuuki is a very bad example how it should be done while...