The ballpark distribution I usually go by is 1:1:2:2 for thmr. Which would be about 0.4% for 4.8% of a healer’s damage, but then up to doubled again because raid buffs are exceptionally strong. I don’t particularly think it matters that “just direct crit misery” provides more party damage, because it’s primarily a gauge management tool.
I think scholar lacking both big hits and high sustained dot damage doesn’t really do it any favours in this specific discussion particularly as chain is the primary raid damage contribution. Energy drain having a significant (eg x1.8) potency buff would be nice, but increasing it too much would tip the balance from aether flow management to aetherflow’s purpose. As it stands it contributes about as much as earthly star on ast in p5s on the top parse which I’m going to extrapolate wildly from because it’s not a terribly fun site to navigate on mobile.