I would like to make a suggestion for the council to discuss:
Roserade, not only the number one pokemon in UU, but possible the strongest abuser of hazards in the tier, only beaten by Deo(s), Fortress (both OU). In the tier itself, Roserade is the only pokemon with the ability to use Spikes and Toxic Spikes (aside from Omastar, but he has better things to be doing, and his defensive typing is horrible. Roserade's typing is also very strong for a hazard build as she has some useful resists, and of course, the ability to suck other team's toxic spikes.
When Roserade isn't setting spikes, she can threaten pokes with a menecing 125 base special attack, which isn't powerful on its own compared to pokes like chandelure or Jolteon, but unlike those two, no single pokemon can set up spikes with relative ease, and hit like a truck. Deo(s) suffers from fragility, while Fortresses attack possibilities are laughable at best (although fortress is amazing, and still OU since he beats every other hazard layer, except perhaps froslass if it doesn't carry gyro ball, and froslass isn't really ou material). And if Roserade chooses not to go the hazard route, or just uses Toxic Spikes, she gets the ability to use Sleep powder, which under the new mechanics, can be devastating.
The other issue with Roserade is the lack of rapid spinners that can force her out. If we look at some of the other hazard layers. Hitmontop can spin all day on pokes like donphan or Deo(d), and even carry toxic/foresight for ghosts that attempt to spinblock. Donphan can come in on any physical hazard layer in the tier. What spinner can safely switch on Roserade? I can only think of two, neither of which are UU: Torkoal and Crygonal. Both are SR weak, and neither can carry a move to spin through ghosts.
Now make no mistake, I am not saying Roserade should be banned or not. If I had to choose, I would lean more on banning as I feel the ability to set-up hazards is too far ahead of the ability to clear them, when Hitmontop/Donphan were the top used pokemon. I think now, its just clear users know who are the more reliable pokes for setting them up. And if Roserade isn't an issue, I have no problem with continuing to use him. =)
I admit, I am not the best at creating arguments, but anyone have thoughts on this?