That isn't a great idea. Here's just a few questions that come to mind:

What do you consider to be a "massive" aoe? Is it the damage, the number of targets, the range? What is "everyone"? Everyone in the party or the alliance- or based upon a specified radius? What would be the CD?

Given the complexity, I 'm willing to bet it would get bugged. Much better to go with something simpler, which has been suggested for several jobs- which is limiting the number of targets