Some thoughts about the next slate:
to B
Agree, I believe that selling it as a water type Heatran is an huge overstatement, Empoleon has lower stats, does not get Earth Power and Taunt, and cannot hope to have Heatran's versatility as a threat, still Empo remains a powerful fairy check, it is also one of the few stealth rocks user who does not mind Offensive Starmie's coverage, as people prefer Psyshock over Thunderbolt on offensive sets due to stuff like Calm Mind Keldeo, and while defog+sr is (imho) retarded, Empoleon is both a solid sr setter and defog user, boasting a resistance to rocks and immunity to toxic spikes, Scald is also obviously better than Lava as main stab who hopes to burn stuff
to A-
Also agree, while nerfed from BW due to Defog Skarmory is the most reliable suicide lead at the moment who can set up both Stealth Rocks and a layer of Spikes, quite important for hyper offensive teams, it is also, without a doubt one of the best pick for defensive teams, balanced teams are also discovering the wonders of the special defensive set, some Skarmory also run Iron Head so that they can cover mega Diancie, one of the two main magic bouncer atm, the fact that it can be customized for all kind of teams, unique type, solid recovery, access to both Stealth Rocks, Spikes, WW/ or even taunt so that he does not become set up fodder are enough to grant him a place to A-
to B-
neutral, leaning towards agree, while Mega Medicham and Mega Gallade are in a way, comparable, mega medicham rewards immediate play, and does not requires to set up in order to dish out powerful attacks, it also gets Fake Out, and Baton Pass in order to screw mega Sableye, two moves that mega Gallade does not get, and now, with Mega Sableye falling usage-wise, I could see it rising to B+
to A+
Disagree, while Starmie is one of the best hazard remover I don't think it is at level of other stuff like Latios, just like Latios it has troubles against Scarf Tyranitar, a common pick on balanced teams working around hazards, and obviously it does not get Latios' coverage or destructive power, I just can't see Starmie A+ and Latias A
to B-
Agree, mostly for the Choice Band set, thing is a powerful wallbreaker with very few switch ins opportunities, rock/dragon as a type isn't that bad, just like 82/119/59 bulk, while yes the special defense is quite low, hp and defense aren't bad for a wallbreaker.
to C+
Neutral, not tested enough, it surely does not have the same advantages back in BW, though I have also seen life orb variants acting as an okay sweeper with a gold speed tier.
to B+
Agree, tbh, I consider Reuniclus and Hydreigon two hidden treasures from BW, forgotten, but in no way useless, yes, fairy types, competing with Landorus-Incarnate as a wallbreaker and the speed tier rise surely do not help Hydreigon but Hydreigon also gained something, Dark Pulse hitting for neutral damage steel types is by no means something small, it can easily pull off mixed sets thanks to 105 base attack it can easily use stuff like Superpower and U-turn to have more chances against defensive teams/scarf tyra from balanced teams, while seriously, what exactly can come in against Hydreigon's atacks on balanced teams? it is even worst than Kyurem-Black, since Hydre gets other cool stuff like Dark Pulse for hitting Jirachi and Fire Blast for (Mega) Scizor and Ferrothorn, the only real safe switch in are fairy types, which I suppose it's good considering how stuff like Mega Metagross have excellent sinergy with it.
to A
Disagree, maybe I'm one of the minority but I believe Volcarona shouldn't even be A- rank but B+, A is just too much, it has a 4x weakness to Stealth Rocks, is one dimensional on the contrary of Talonflame, has a fourth move syndrome with Hidden Power, with ground being the most used, leaving Volcarona fucked against dragons and Charizard, has trouble against common priority such as Aqua jet cb Azumarill, or Talonflame's Brave Bird due to the 85/65 bulk, which is not boosted by Quiver Dance, sadly, it also pretty much requires to be timid with a good deal of speed, so that Scarf Lando does not kill it, as such giving up on power and/or bulk.
to A
Neutral, probably leaning towards disagree, while I used Mega Alakazam on a good deal of battles, and its ability to cause switch and outspeed majority of the metagame while also trolling it with Trace, I always hated Focus Blast's reliance, and Psyshock/Psychic being a difficult stab to spam, you also get a mega evolution which is ironically trashed by Knock Off having a weakness and very low bulk, while all mega evolutions on A, A+ and S Rank are bulky(excluding Mega Gardevoir, which has though a much better type, and also being one of the best Wallbreakers in the game at the moment) and also much more easy to fit on teams archetype, mega 'zam requires a good deal of support, especially volturn support, so that it can easily come in, so I'm not exactly sure if it is on the same level of other A threats, especially mega, since they let you use the slot.
edit: missclicked, lmao, I meant mega medicham to B-