Well, time to voice my opinions:
Kyurem: Broken as anything. Insane Sp.Arttack, on par with Latios, and you see the destruction caused by Scarf Draco Meteors when you lack... anything with the bulk to take them.
Then there's Blizzards in Hail.
Kyurem has to go.
Chansey: Who cares that this thing dies to Close Combat [And that's about it]? There is such a thing called switching.
Chansey walls everything except set-up physical attackers, CB Azumarill, and Close Combats.
The latter can be switched out of, the former would probobly fall to Toxic, S-Toss and Softboiled before Chansey does.
Also, Deo-D walls Close Combats all day long.
Chansey has to go, the only reason it's UU is because Blissey can actually use attacks. Otherwise, it's technically superior.
Deyoxys - D:
I'm no good at spelling thing's name, so I'm just gonna call it Deo-D after this.
This thing is nigh impossible to take down. You can't set up on it, it has Taunt. Cosmic Power makes it invunerable to... everythig bar crits, which won't OHKO it unless it's something like Night Slash from Absol.
Toxic can cause issues, but again, Taunt, and other support moves.
Deo-D can stall you until the cows come home, and can also set up hazards with absolute impunity. Needs to go.
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Other than that, right now, nothing stands out as broken to me.
Sun might be an issue, however, I run what is possibly the perfect counter to it. A Bulky Dragon Dance Altaria, with Cloud Nine.
It basically shrugs off everything and anything Sun can throw at it, except HP Ice, while it sets up in their faces.
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Speaking of Altaria, best Set-Up Dragon in UU. I run a physically bulky Altaria, with Dragon Dance, Roost, Dragon Claw, and Earthquake. If it gets set up, it's game over.
The EV's still need tweaking, however. I could stand to lose a bit of bulk and put some more in offense.
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Raikou is also beastly. Magnet Rise + Calm Mind is simply insane, giving Raikou no weaknesses. Between HP Ice and Thunderbolt, everything dies.
Unfortunetly, everything excludes Chansey and Deo-D... I seriously should consider running a T-Spiker.
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Nidoking is a brilliant revenge killer.
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Azumarill too, and he can afford to run Waterfall with so many pokemon who can take advantage of it in OU.