Yeah, I'll join in on the choir that wants Celebi in A now. And just for fun, here are a few other musings I have about the tiering now that one of the biggest threats in the metagame is completely gone.
- Breloom to S? Yeah, it's still checkable, but Breloom just lost one of the biggest thorns in its side. You won't see too many Breloom having to run Rock Tomb anymore. It can incapacitate nearly all its counters with spore and blast through 3/4ths of the metagame with its ridiculously powerful technician-boosted STABs. Oh, and it's also got priority. Without a doubt among the biggest threats in the meta.
-Zapdos to C? Zapdos' viability, whether in terms of it's ability to check Tornadus-T to its viability checking other rain threats, has been discussed nearly to death by the suspect thread. However, I'm pretty sure that most agreed Zapdos is a mediocre pokemon in OU outside of being one of the best Tornadus-T checks, and Tornadus just went Uber. This should prevent it from being tiered the same as current powerhouses like Tentacruel, Gengar, Venusaur and Jellicent.
Jolteon to C? Another pokemon whose viability was largely dependent on its ability to combat Tornadus-T at least somewhat effectively. Without that niche, its speed stat isn't really that important any more...it's like, yay, you outspeed Alakazam...
Venusaur to A? I'm sure this has been mentioned quite a few times before, but this thing is already a nightmare under sun for any rain team to face, and now probably the best combatant to it that was found on standard rain teams is gone baby gone. I sort of see Venusaur like this- if you get Sun up permanently and remove Heatran/whatever counter the set you're running has, it is GG. That is an A-tier pokemon in my opinion. I mean, the thing almost has a win condition.
Or maybe I just think B rank is too crowded. I feel as though there are many pokemon in B that are waaaay better than some in the same tier.