I agree with keeping Klinklang in Top B. I use Klinklang, and it is amazing. Sub+Shift Gear can wreck shit, and it works as a fantastic late game cleaner, pulverizing weakened teams with its Speed and Gear Grind+Return. With hazard support and Steels out, Klinklang has no trouble sweeping. Because of Sub and Shift Gear, Klinklang can easily take advantage of Uxie by Subbing so it can't T-Wave, and setting up to wreck shit. Klinklang is, alongside Cinccino, a great weapon against hail teams, breaking Substitutes and Focus Sashes with its Gear Grind, while it resists Blizzards. Mesprit+Klinklang is a great boosting duo, with their amazing synergy. I agree to keep it in Top B.
I also agree with the claims Dcae and Swamp-Rocket are making about Ditto. There has never, ever been an instance where I've ever considered to use Ditto on one of my teams. While it may revenge things like Shell Smash Omastar, it is either all or nothing for Ditto, and against most RU teams, Ditto is often nothing, because it cannot revenge kill anything. Ditto is extremely niche and should drop to D.
Also please move Sandslash back down to Mid or Low D. It has a lot of noticeable flaws that make it a lot more of a hassle than it's worth a lot of the time. Sandslash can very rarely get the chance to spin, because it gets cockblocked by pretty much every spinblocker except Spiritomb, and Sandslash's poor Speed and awful defensive typing mean that even if Sandslash can beat the spinblocker, it will be too weak to spin, and things like Sceptile and Lilligant can take advantage of it pretty easily while it gets worn down by the very hazards it should be removing. It needs Pursuit support to be able to pull off the spin, and that's bad when you compare it to Kabutops and Cryogonal, who don't even need Pursuit support to spin. A spinner must first and foremost be able to remove entry hazards on its own; Sandslash cannot do that, and thus it can't help things like Scyther and Moltres who need that spin. Sandslash's typing also leaves it prone to things like Slowking, and unlike others, it doesn't really have many redeeming qualities. Awful Pokemon, please move it back down, kthnx.