I'm going to switch from CoA to CoE, initially i thought i was wasting GCDs recasting it, but the /casesequence CoE,Null will work perfectly.

I've noticed that my mage and shaman will do more dps on some of the shorter trash fights, but once my lock gets going, he stays pretty good. Fully buffed, with totem of wrath down, my lock is pushing 2600 spellpower. Ive seen 5k dps on the heroic dummy. I'd venture that CoE will be a pretty big boost, as on average CoA only does like 5% of the overall damage. My entire team pumps out a lot of damage, even my pally regularly breaks 2k, sometimes 2.5k. I've resorted to smiting with my priest for another 1-1.5k (all that spellpower lol)