I am perplexed about the removal of Thunder... Just doesn't make sense to me. Don't worry though. You will get Aero II which is stackable with Aero I and also keep in mind the Stone I is still useful for slowing down mobs. Fluid Aura for push-backs etc. etc. I don't see the point in Blizzard beyond the scope of pvp combat. I'm definitely going to miss having Thunder in my dps rotation so I can understand your frustration...