So I'd like to see some of the pokemon in the lower ranks move down.
Volcarona: B- to C
Volcarona, once a pokemon said to be OU only because of stealth rocks and Heatran, has fallen from grace in Gen 6. It finally dropped to UU back in March, and for good reason. HO teams laugh at volcarona as they bring in Charizard X, Azumarill, Dragonite, Gyarados (Non Mega-Evolved), Talonflame and more, who resist its stabs and use it as setup bait, or just fire off powerful attacks to OHKO it. It can't beat stall at all as Chansey, Heatran, Bulky Charizard X and SpDef Clefable wall it to hell and back. Volcarona is also hampered by a terrible typing, including a 4x weakness to rock and a weakness to 2 extremely common types, water and flying, without many good resists to make up for it. The final nail in the coffin for Volcarona is its poor physical bulk, 85/65, which gives it a tough time setting up, especially in conjunction with its stealth rock weakness. While Volcarona does have some upsides, such as being able to deter U-Turn spam with its flame body ability, it is a very mediocre sweeper that finds it difficult to setup, while also being setup bait for many powerful sweepers.
Sharpedo: C+ to Unranked
The usual set is Protect, Waterfall, Crunch, Aqua Jet/Destiny Bond, right? Its job is to revenge kill or sweep late game, but it's terrible at both. If it wants to revenge kill something, it has to protect first, giving your opponent a free switch to something that resists its stabs such as Keldeo or Azumarill. However, most sweepers either carry priority (Pinsir), speed boosting moves (Volcarona :P) or both (Dragonite), so it can't revenge kill them anyway. It'll also never sweep in this priority infested meta because it has the defenses of a wet paper bag; even a resisted hit like Azumaril's Aqua Jet or M-Scizor's Bullet punch are guaranteed 2HKOs after Life Orb. Its lack of a boosting move also mean that you'll generally have something to tank the hit and KO back. Destiny Bond is cool, but when you're probably going to kill this with priority it doesn't even matter. Tbh, I don't see a reason to even use this over Deoxys-S or Talonflame or even Sash Alakazam. It might fit in D rank (
D Rank: Reserved for Pokemon that are mediocre in the OU metagame, but are viable enough to justify their use on select teams. These Pokemon are either usable but have no real niche, or are only capable of doing their specific task and fail at doing anything more than that. Pokemon from this rank have multiple crippling flaws that prevent them from being successful a majority of the time, and are often severely outclassed because of it.), but tbh its so shit I think it should just be unranked.
Blissey: C to D/Unranked
I'm sure everyone already knows why; the only thing Blissey has over its little sister Chansey is Flamethrower to stop setup from Scizor, Ferrothorn and Skarmory.
D rank imo. (Don't anyone dare say "Bu-bu-but KNOCK OFF!")
TL;DR
Volcarona: B- to C
Finds it hard to setup with poor physical bulk, is setup bait for many powerful sweepers, and easily revenge killed by all the brave birds/aqua jets/sucker punchs flying around.
Sharpedo: C+ to D/Unranked
Its job is to revenge kill and sweep late game but fails at doing either because of the abundance of priority and its paper-thin defenses. No reason to use it ever over Deo-S or Talonflame tbh.
Blissey: C to D/Unranked
Chansey>Blissey, Duh.
(Oops, other people ninja'd me on Blissey, I had this open yesterday and finished it this afternoon. )