After playing UU for a few days, many people are suggesting Roserade for BL. I've actually been thinking about this for a while, and I kind of feel that Roserade has a strong case for BL status, even if Honchkrow did come back (it's not slowing Roserade usage much). Roserade's versatility gives it the ability to fit on nearly any kind of team, ranging from pure stall to offensive. Under the characteristics:
Offensive: The Life Orb attacker that was popularized by Heysup a couple of months ago after Crobat and Shaymin left is one of the hardest special attackers to switch in on without Registeel and Chansey, and even then they are slept. Heysup also demonstrated how well it can take out Chansey over the course of a few turns, clearing its own path. The Life Orb attacker is a menace to both offensive and stall teams. The Choice Scarf set can reach 459 speed, effectively revenge killing many rain dance sweepers such as Ludicolo, Omastar, and Gorebyss. The Choice Scarf set can do well vs. more general offensive teams, only fearing priority attacks, other faster Scarfers (Typhlosion and TrickScarf Mismagius is about it), and faster Yanmega, who usually needs two speed boosts with the EV spreads people are commonly running.
Support: the various Spiker sets (Subseed, Synthesis) can get up three layers of spikes fairly easily. Roserade doesn't care for Donphan and defensive Hitmontop. It can get in nicely on bulky waters and repeatedly Spike and recover. It sets up rather easily on many members of stall teams, only getting blocked by opposing Roserade.
I'm still on the fence about Roserade though. Even though Honchkrow and Dugtrio have come into UU, they haven't really done much to curb Roserade usage yet. It still has the low defense, making it very vulnerable to Pursuit users. I don't think it can sweep "with little effort", even with the Life Orb set, but I'm still thinking about its fulfillment of the support characteristic.