RE: The Storms ~ This format is ours! *Battle Roads, Battle Roads, Battle Roads!
Gechamp is already not too much of a consistent deck. Losing Claydol hurts it, but you definitely need a better draw engine than R/R. Except for anything with Dusknoir in it, decks that require two stage-2's get hurt quite a lot. Hmm... I'd say to try out Dodrio from SV. It is Luxray bait, but at least provides a draw without Claydol. A decent, consistent, slow draw.
That brings me to my next point. Gengar SF alone. No Claydol forces the meta to focus around Uxie for some draw power, or anything else with a Poke Power. Easy Shadow Rooms. Then take Vileplume as a tech for some nice locking, I can Poltergeist for some high damage. I don't have to be concerned about those Trainers going away with Cosmic Power either. Since Gengar itself is fast and doesn't need much draw, it can easily afford some extra Uxie spaces. Hey, maybe even Dusgar!