Small world...

I'm in the process of leveling 5x Boomkins for (alliance PvP) and 5x Affliction Locks for (horde PvP).

The druids are an incredibly fun team, probably the most fun I've had boxing.
I don't have high hopes for them in arena - not enough burst.
But they will destroy in BG's and world pvp.

The warlocks are a class like rogues, which just about everyone hates.
It takes as long for a lock to place 4 dots as a mage to nuke you for the same damage.
But because it isn't instant, you have a bunch of dots then start to look for the lock.
I think ~20 dots/curses will really be fun to land on people...