What would people think about ranking Alomomola and/or Mantine. Both are borderline analysis worthy (Mega Luvdisc is getting one btw), so they're clearly worth at least the D rank. Alomomola is very useful as a Wish passer, it can Mirror Coat massive Special Attacks for the KO, and it recovers 33% of its health simply by switching out. It easily fits in FWG cores, and also works great with other Regenerator Pokemon, like Amoonguss. Mantine, on the other hand, is a niche Defogger that is able to very easily beat Landorus, Mega Charizard-Y, Keldeo, and other Special attackers. It's nice also as it has two immunities and lacks the nasty Grass weakness that most Water-types have. I'll tag these members, as they all know a bit about at least one of these two:
Chillarmy TRC Jukain Dice alexwolf Agent Gibbs Branflakes325 . Right now I'm thinking C rank for Alomomola and D rank for Mantine, but I'm not sure.
In addition to those, I'll comment on the other Pokemon at hand now.
Victini: Solid B rank in my opinion. It has the versatility of Mew with the overall effectiveness of Tornadus-T. Depending on the opposing team, Victini and Tornadus-T won't always contribute a lot, but they generally will. They are both matchup based, and when faced with a team they perform well, they will do superbly. It's much better than everything in B-, barring Ampharos and Aerodactyl, but those two I think are held back because they take the Mega slot. It's also imho better than Conkeldurr, Gothitelle, and Manectric, who all fit the definition of B rank perfectly. Victini definitely fits in with those better.
Weavile: I'm not really sure about this one. You really have to compare it with Lucario to see if it's worth B, and I don't think it compares favorably. Its priority is weak, its Ice STAB is weak, it has trouble fitting all of the moves it wants into one set, and it's forced to run Jolly, so it loses out on a lot of power. However, it certainly has its benefits. Ice is a better typing than normal, and a resisted Knock Off is certainly more crippling than a resisted Close Combat. Its Speed is its biggest draw, and it's basically what makes it viable. In my opinion it fits better with the high risk high reward Pokemon in B-, like Staraptor, Entei, and Crawdaunt.
Dragonite: I know TFL hates it, but idk if it should go down at all. CBBNites is a great glue for BO teams, CBNite is a great revenge killer, and DDNite is a nice sweeper. Its last role is highly contested by Charizard, but its other two are largely uncontested and very good. It belongs in A,
maybe A+, but certainly not A-.
Gliscor: omfg the Specially Defensive set is so good. How did I just hear about it now? It wishes it had more bulk, but its combination of 62.5% recovery per turn when using roost and 12.5% otherwise, Taunt, a reasonably powerful Earthquake, Toxic, and the nice Flying-type without the Electric and Rock weaknesses make it a definite A- Pokemon, no doubt. To be honest, I think if/once it rises, it'll be the third best A- Pokemon.
Hippowdon: I'm not sure. This guy is always promising, but it never does that well for me. Its bulk, while good, never seems to be good enough. Maybe I'm just trying to use it in ways it shouldn't. Anyway, that's enough personal reflection. It isn't as metagame defining as Tyranitar, Keldeo, or Talonflame; rather, it's an extremely good Pokemon sitting in the shadows of the titans, similar to Terrakion, Heatran, and Mandibuzz.
Amoonguss: Definite B+ rank in my opinion. It's practically mandatory on defensive teams not using Ferrothorn. Its combination of great bulk, accurate Sleep, setup deterrence, and instant recovery make it an insanely good defensive Pokemon.
Also, one last thought now; what's keeping Latios from A+? I view it as one of the metagame defining Pokemon, like the ones I mentioned earlier. Its Draco is a nuke, it has the coveted Psychic coverage for Venusaur, and it has Defog to eliminate hazards. It's extremely common, and for a good reason. When teambuilding, you really have to think about it as much as you do Clefable and Keldeo - certainly much more than its A rank brethren.