point taken about Snover and Walrien sir but you're generally wrong on Cryogonal which I use outside of hail to pretty great success consistently being in the top 5 for the ladder in September/August (and the metagame hasn't changed too much since then except hail right?!) with Froslass (suicide spiker)/swampert/mono attacking kingdra/cryogonal/otr cofag/bulky sd heracross. You can tell this team does not care terribly much about Stealth Rock since most my team is neutral to it and froslass hardly counts since it leads 99% of the time. Nobody uses Tspikes really but Cryo is cool for that too and the main reason I use him is to get rid of nasty nasty Spikes. With a Life Orb Sableye, Cofagrigus and Chandelure all usually quickly fall to Ice Beam and HP Ground even with little offensive investment. I am confident it is C-tier but i am also confident Stealth Rocks should be banned along with Kingdra and Chandelure and Togekiss (hehe kidding on the square) and Scald should have its burn chance reduced to 10% so um you need other people's opinions.
Cryogonal isn't actually meant to wall special attackers it meant to be able to check them and spin on them but thats not true what you said it can wall some of them or take a hit or two and KO back like Nidos/Roserade/some Zapdos and with Haze its never ever set up fodder.
I will use Dusclops again and prove I am right and you're all wrong. For a stall team like Qwilfish/Arcanine/Dusclops/Snorlax/Umbreon/Kabutops/ Dusclops was far superior over other ghosts I tried because Curse and because it could absorb EQs like it resisted them. Apart from the Ground weakness I mentioned, one of the only problems with that stall team has is weakness to hazards (that Kabutops has a hard time spinning on Sableye and hehe Dusclops) and the fact its hazard setters are the same type (can never set up any hazards against Electrics and Grounds and strong special attackers.
also since I just noticed your post Doron haze is worse than Curse on full stall since it generally will not let you beat last poke set up still (they are rest talkers that can outstall you). And forget that support movepool other stuff can do it better (Sableye=prankster=win for pure support)