None of that makes ANY sense. The fairy is not the SCH's primary problem, at least not through Titan HM. I think a lot of people are using weird fairy AI as an excuse for being a subpar healer.

Shields are effectively HP, so why would you need a skill to transform that into actual HP? In most battles where you are forced into using Succor, there's enough AoE damage to soak that up before the 30s CD. I can't think of any situations where I'd waste an Aetherflow counter for something that pointless.

Bane copies certain DoTs to surrounding enemies (low range). How is that similar at all to your idea? Furthermore, Succor shields are roughly 200-300. Even if you were able to double cast that on top of a Succor channel (which you can't) - that's hardly a "spike".

I'm at a loss for words, how do you not know your class?