So Abomasnow is good.
And Rotom-S, well, he's actually better than Rotom-H and Rotom-C. People are discouraged of using him because of Zapdos and Voltolos. But he gets an important thing in this metagame: a STAB Flying move that can be used. No one uses Drill Peck in Zapdos nor Aerial Ace in Voltolos. And with a metagame infested with Roob... Rotom-S also has Will-O-Wisp to cripple physical pokémon like Excadrill (good name for Dory IMO) and Randorosu, Trick to destroy Chansey and mess up with Blissey, and Confuse Ray, to put him apart Togekiss and Jirachi (Swagger sucks). If you're not convinced yet, pass by my Rotom-S analysis in C&C :)
And SDS is opening up a discussion: Mommen vs. Erufuun.