Some cents on some of the most recent nominations:
Doublade is an excellent Pokemon, a metagame defining one while we're at that. However, because of that, the metagame's also adapted really hard to it: Knock Off Gligar consistently beats Doublade, Moltres destroys it right off the bat and the current circumstances are really unkind to it in general. However, due to the sheer amount of Pokemon it keeps in check and ability to sweep under some circumstances, it means that
A+ is fine for it, and it should never go lower than that, especially considering that it's very likely Doublade returns back to S come ORAS.
I've used Bronzong intensively, and if there's one thing that the RUgged Mountain (Afro Smash) has taught me is that it doesn't matter how safe you are from Dugtrio if Spiritomb eats you alive. Seriously, the later is way more common and consistent than Dugtrio, to the point where I'd rather use Registeel and be weak to Dugtrio than being destroyed by Spiritomb every time. Don't get me wrong though, Bronzong shits on a lot of stuff, including Rhyperior, the same Pokemon as Registeel and probably some others I'm forgetting. However, I think that
B is absolutely fine for the role Bronzong fulfills, although B+ wouldn't hurt to see either.
Sharpedo is the perfect definition of an
A+ rank Pokemon, and should stay as one. It is an amazing sweeper, and one of the only reasons to use Hyper Offense (or Baton Pass) in this metagame, which is huge. However, it struggles to break through Aromatisse, Alomomola and even defensive variants of Druddigon, and has some more offensive checks too, such as Virizion and Gurdurr, but what makes it such an amazing Pokemon is how well it punishes the opponent's mistakes, since one single misplay with a team's answer for it make it very easy for Sharpedo to run rampant. However, its lack of any defensive backbone or utility, as well as difficulty breaking through Pokemon which are really hard to wear down (Amoonguss, Alomomola, and Aromatisse), mean that it should never touch S Rank.
Now, onto some nominations of my own, both of them related to Hyper Offense:
Spirit and some other people have seen me using this for some decent success (that team in general is very troll-ish, but Archeops always ends up pulling its weight), and I honestly have no clue why it was removed from the viability rankings to start with. Its offensive sets are horrible, and that's an undeniable truth. However, its an amazing suicide lead, outrunning every other dedicated lead (with the exception of Accelgor, which gets destroyed with ease) and guaranteeing Stealth Rock along with momentum. This doesn't look all that spectacular at first. However, what really makes Archeops shine is its access to Endeavor: Aside from guaranteeing Stealth Rock for its team, it can also massively weaken any opponent that doesn't have a Ghost-type, considering that Archeops' user predicts correctly every turn, making it a premier contender for a suicide lead on offense. I'd probably add it in
B-, but due to it being one-dimensional, I wouldn't mind if it started at
C+.
This one isn't really mine, but it had some mountain success thanks to
Psychotic. Haunter has a nifty Speed tier for RU, a ridiculously spammable STAB move, high Special Attack, the coverage to dismantle some teams and, access to Destiny Bond really sells the deal regarding this thing's viability. Even when it's unable to pull its weight through its offensive prowess, Haunter still has the utility provided by Destiny Bond, allowing it to knock at least one Pokemon. Anyways, here are some damage calculations regarding its power:
252 SpA Life Orb Haunter Sludge Wave vs. 252 HP / 0 SpD Aromatisse: 408-484 (100.4 - 119.2%) -- guaranteed OHKO
252 SpA Life Orb Haunter Sludge Wave vs. 104 HP / 156 SpD Alomomola: 265-313 (53.3 - 62.9%) -- guaranteed 2HKO after Leftovers recovery
252 SpA Life Orb Haunter Sludge Wave vs. 252 HP / 96 SpD Amoonguss: 199-235 (46 - 54.3%) -- 5.1% chance to 2HKO after Black Sludge recovery
252 SpA Life Orb Haunter Shadow Ball vs. 0 HP / 0 SpD Cobalion: 204-242 (63.1 - 74.9%) -- guaranteed 2HKO
252 SpA Life Orb Haunter Shadow Ball vs. 252 HP / 252+ SpD Bronzong: 203-242 (60 - 71.5%) -- guaranteed 2HKO after Leftovers recovery
252 SpA Life Orb Haunter Shadow Ball vs. 0 HP / 0 SpD Moltres: 179-212 (55.7 - 66%) -- guaranteed 2HKO
252 SpA Life Orb Haunter Shadow Ball vs. 252 HP / 104 SpD Cresselia: 229-273 (51.5 - 61.4%) -- 95.7% chance to 2HKO after Leftovers recovery
252 SpA Life Orb Haunter Sludge Wave vs. 252 HP / 0 SpD Meloetta: 149-177 (36.8 - 43.8%) -- 99.8% chance to 3HKO after Leftovers recovery
252 SpA Life Orb Haunter Shadow Ball vs. 248 HP / 8 SpD Assault Vest Slowking: 195-229 (49.6 - 58.2%) -- 98.4% chance to 2HKO
With all of this in mind, I'd probably add it in
C rank, but as with the first nomination, if that's too much, D or C- would be fine for the time being.