Ya I envision lots of dots on multiple people

I see priests being obnoxious though with Mass Dispel removing chunks of dots very quickly and teams being able to heal through it without going on defensive meaning their 2-4 DPS are just drilling your players. Everyone on your team wears cloth.

I really want someone or myself to eventually try them out at an Arena level to give a better perspective. The only information I have on Spriests in arena is that a triple boxer did decent but required a UA lock to be effective.
As for Warlocks there are quite a few of them lurking around on the boards, their input is invaluable.