I'm still waiting for Krastos the Glue Maker. Seriously now, what I'd like to see is either a) a well-developed villain, preferably dangerously intelligent and malicious or b) something inhuman and incomprehensibly alien (sort of like an eldritch abomination and/or a force of nature). But then again, maybe these kinds of villains are a bit too adult for a kids' show. However, as it has been mentioned before, the show is kind of over-saturated with villains, so having an old antagonist return would probably be a better idea than introducing a new one. Still, now that I think about it, Krastos would be a pretty cool idea for an antagonist. Not as a crazed maniac who kills ponies and turns them into glue, but as a misunderstood craftsman who is believed to be one, when all he does is harvest hoof clippings and/or shavings (which is really all he needs to ply his trade).