If a villain grabs a civilian, that would be their Standard action, so they wouldn't be able to ready an action till next round, right?
Also, can you ready an action against a readied action? "If he goes to shoot the civilian I'll shoot him."
On topic, I can't get into a Hero High type game either. The only way I would be interested is if it were more Young Justice styled, where High School was only a small part of the drama. But then I can't really relate to any of the play as teens RPG's that are so popular right now.