I think curse is a nice spell for pvp, but it needs a shorter cooldown.. i mean the duration of the spell is 3 times shorter than the cd!

Conversely, misty's arcane needs a shorter cooldown too.. and it's AOE is so so sooo small that most of the times it doesnt work at all. Being the mage that I am I tend to fall back a bit, so rogues and mages are never under misty's AOE when I fire the arcane.