For the most part the changes seem agreeable, I've got a few niggles with it but I don't think there's anything that couldn't be tweaked out.

The only real oversight I can see is upgrading Lustrate into Excog. That leaves SCH in a bit of a unique position where it doesn't really have a dependable single target instant cast heal with good reach to get someone topped if they still need more HP for an incoming hit but are over 50% so Excog won't fire in time. It's not that uncommon for people to dodge AoE heals in Savage so I could see this being a bit annoying.

Personally I think you should be bolder with Dissipation, make it detonate or even refresh existing shields or something as a burst of healing or damage so that the name still makes sense.

As for Energy Drain, IMO I think the ability is beyond cursed at this point. A measly 100 potency 'nuke' shouldn't even be mentioned in the same breath as abilities as powerful as Soil and Indom, yet here we are. Aetherflow as a whole is damned if you do and damned if you don't right now because we shouldn't be in a situation where we can recommend shelving our most powerful healing tools for such a trite amount of DPS. But yet remove the spender and what else are you left with in casual content besides wild amounts of overhealing. Honestly, if SE are happy with healing requirements to be as low as they are now, the entire Aetherflow system needs a ground up rethink IMO.

Merging Blessing and Whispering Dawn makes a ton of sense, Blessing in it's current form is pretty worthless if you ask me, but adding it's up front HPS to WD and sidestepping the

Lastly, Broil IV spreading dots? Yeah I can get behind that. Good idea and a nice homage to Bane.