Claydol sucks and has always sucked. Honestly, it just didn't do anything but spin. Sure it usually countered Aerodactyl, and sometimes countered Aggron. But most of the time it just sat there and got set up on by something like Gallade, Cof, or Sigilyph. The only legitimate reason for using it was because the meta was so damn centered around hazards that certain threats absolutely needed to be paired with spinners and Claydol as just the only option that synergized well (see: offered a bulky Rock resist and Stealth Rock).
Speaking of Aggron, it's really damn good right now. I'd say that it or Cof is the best mon in the meta right now. Aggron lost two of its best counters, and the few other reasonably solid Aggron checks don't fit onto many teams as easily as Claydol and Gligar. Cof would be the best mon with Krow leaving, but people just overprepare for it now. Not to mention the fact that Absol just keeps getting better, which doesn't exactly help Cof.
Also I will be going through and editing out all mentions of Honchkrow on stuff that doesn't need to be completely revamped today. xD