I need to give credit to Spicy Tuna for pointing this out, but the "new" Blizzard in Beta is amazing. I have all of Leiandra's 61 points invested into Frost. She rides around Northrend on her little horsey to round them all up.
Frost Nova and Jump...
Most of the mobs don't even make it out of the first Blizzard. Those that do are still pretty far off, and I haven't had any melee make it through my second cast of Blizzard. In short: AoE farming will be a lot of fun with Frost.