Dunsparce, I never understood what its purpose was in the grand scheme of the game.
I'm pretty sure its designed to simply exist and be a crappy pokemon that GAMEFREAK just likes to put in and make people mad. Like its abuse of Flareon.
OT: hm. I dont know. Maybe Alteria, since its one of the few major dragon pokemon without a third evolution. I mean, I think it could like pretty bitching, if you didnt make it look so much like a cloud. ands there's a lot of potential.
Or maybe pair of new eeveelutions. I understand why they werent in the new game, but hey, it wouldnt hurt to have some. I'd like to see a tradable dragon fang eeveelution and and a poison one, ever since seeing this:
http://fc02.deviantart.net/fs70/i/2010/296/3/c/fake_eevee_evolutions_by_charmer_chibi-d31cozj.png
... And although he's a hyena, I'd like to see a mightyena evolution that made it more wolf like. I mean, there's so much potential for a strong physical dark sweeper in him.