I'm not sure if people would agree with you on Dusclops. That said, I would potentially agree with moving Dusclops to D-Rank, yeah it's a really bad Pokemon overall, but he has a small niche as a Curse staller that can whittle down the HP of Pokemon that are problematic to stall and could possibly use them as setup bait. Curse and Will-O-Wisp make sure he's not easy to set up on and such, and he can take on Mienshao, the absolute best UU mon with ease, while spinblocking Blastoise and Claydol. Overall yeah it's bad, but it can be used to some effect.
Let's see what reactions spring up though.