I agree that Scholar is pretty busted, but the reason the spotlight is on AST is because that's the spot WHM is gunning for. AST can fit in both, so will be more likely to push White Mage to the side. But this is the case precisely because Scholar is so good.

Even in the WHM/AST comparison bringing SCH down a peg or two (or ideally bringing the other 2 up) would benefit WHM more. It would allow AST, as shield healer, to more freely partner with WHM as regen healer.

I'll admit most of my time has been spent comparing WHM and AST, and so I haven't thought much about how Scholar could be reworked, and any changes I've put forward only enhance the problem (eg: giving Selene a stronger moveset to remove outdated skills). But it does seem the issue is that the fairies are too strong, and SCH's kit is tied to oGCD skills to facilitate fewer casts. Right now the fairies are a native 250 potency regen, so that could probably be cut a little. Even at 150 it's better than regen because it's free and native.