Or, we could try to be original instead of just buffing spells. I'd still DoT adds, which in my opinion would make shadow AoE too OP. With DoT's and a newly doubled Mind Sear we would hurt.
A spell like I suggested would make our AoE more bursty, which would be better suited to current raid content. I can't think of a fight where you have to AoE constantly. Plus, I still think we need a AoE CD. AA and SF are useless for this. I am yet to think of a class/spec that doesn't have a CD that buffs their AoE. Maybe not by buffing the damage of their AoE but certainly an ability that is used outside of their "normal" AoE to add that extra bit of damage.
If you could suggest something that would be a AoE cooldown that isn't spread DoT's I would be more than happy to hear it