alexwolf
Some changes I propose... I don't wanna go in depth for each one cause that will be a huge wall of text. So instead maybe it can spur some discussion.
Aegislash: S --> A (The days of this thing being king are over. The meta is super prepared for it. It's not that good. The only thing that it temporarily can boast is that it stops lucario, which is gonna be gone. It was an S-tier pokemon when the meta was new, now it's totally nbd)
Venusaur: S --> A (Same goes for venu. Gets wrecked by SR, weather, and burns (if it's on your team it's probably your answer to Rotom-W. have fun getting burned). When lucario and genesect leaves, it's lost 2 of its main purposes. Still a nice azumarill counter, but it's not that good anymore. Birds, pinsir, deo-S, latios, and charizard, basically most of the upper tier completely destroy venu)
Conkeldurr: A-->A- (Since when has conk actually had major utility for your team? It mostly "fills in the gap" per say, and isn't as bulky or strong as it pretends to be)
Greninja: A--> A- (Idk I just feel it's not that good. A- material)
Gyarados: A--> A- (Mega doesn't get crunch, and the non-mega can't wall very well because of SR)
Mega Scizor (only): A--> S (Has the bulk of skarmory and a beastly typing. Late game SD sweeps are incredibly easy, or it can be a huge tank and counter azumarill with insane utility in defog (hazards), knock off (wear down), u turn (momentum), and bullet punch (priority).
This thing is the most underrated mega out there. Most of its stops can be taken out by the combination of U-turn to mag/dug if you want to sweep)
Terrakion: A--> A- (Fairies really fucked this guy, and aegislash. Hard to stay relevant. Not A material imo)
Hippowdon: B --> A- (Definitely a great wall and huge support in smooth rock. Worthy of the small A- tier)
Tornadus-T: B--> A- (Assault vest set can switch into 80% of the metagame and has access to knock off/uturn/flying+fight mix coverage... life orb set takes more advatnage of the airslash+superpower coverage, while also hitting with hard fast uturns. Incredible utility)
Espeon: C+--> B (It's not that great, but it has the niche of being the best offensive dual screener because it has baton pass for HUGE momentum on HO teams. That's enough of a niche for me)
Magnezone: C+ --> B+ (It's not 5th gen where its a deadweight on teams without skarmory or ferrothorn. This thing (scarved) is just a generally good pokemon that can take out top threats and make way for huge sweeps. So many 1800+ teams use this as a testament to its underrated-ness)
Also pokemon can't be "conclusion reached" forever. It should be more like "discussion banned for 30 days". Same goes for blacklisted..