At first I thought this was a bit of a nerf too, but when you think about some of the combos you could use, this sounds like a pretty amazing buff.

This is still speculation, but if Dissipation gives back a full 3 Aetherflow stacks, we could stock 6 Lustrates. Now if you have Eos, you could use Fey Illumination for the 20% heal buff, get 20% from Dissipation, and potentially spam six Lustrates at 840 potency each. Whether or not you'll ever be in the situation to have to do that is debatable, but being able to potentially cast six 840 potency single target heals every single second is nothing short of amazing. Definitely would not make me miss a 25% cure.

Yeah we lose the ability to cure while in stance, but I play a fair bit of WHM too, so it's something worth getting used to anyway. I felt lazy with SCH sometimes.