Well, it's not so bad, but as somebody else has stated, you won't be able to sit in cleric for a long period of time relying on 3 stack of aetherflow without ever seeing the tank getting in danger. I've used more lustrates under cleric than the ones I would like to admit lol, the lustrate <tt> macro while DPSing no longer makes any sense, gonna have to delete it and put something else there.

Yes, it is a nerf, but only to those who took advantage of how ridiculous it was to have 3 25% instant heals every 60 seconds while DPSing. The strategy of the people who didn't "abuse" that in the first place will remain unaffected.