Listen, the only way that you can make it so that you aren't shoehorned into using E.Drain before Aetherflow gets off of CD is if they make Aetherflow a Charge Ability; 2 charges of Aetherflow that you get every 60 seconds. They could legit get rid of Dissipation and replace it entirely with the 2nd charge of Aetherflow as your level 60 skill and you've solved the issue of Dissipation being this god awful skill that conflicts with your toolkit. This way, you can effectively hold off from needing to use Aetherflow immediately off of CD and can actually bank any stacks of Aetherflow that you have remaining should you need to actually heal but here's something that people need to realize.

E.Drain vs Heals has become an illusion of choice in EW. The mere existence of Aetherpact negates the actual choice involved in whether or not you use an Aetherflow Stack to heal or DPS because no matter what, that stack is ultimately being used to heal with Aetherpact at the end of the day and now that you can weave in Aetherpact with Broil, the choice of using Ruin 2 and losing DPS for Aetherpact is gone. I might lose some potency in regards to how much I'm actually healing but I'm losing ever more potency by not using that stack on E.Drain and refreshing Aetherflow on CD.

So stop trying to remove E.Drain. It's as much a Healing Tool as any other Aetherflow skill is.