SCH needs some nerfs

[Mansion]

Whm;
Divine Benison - change to grants shield for 15s and provides 15s of 5%,6%,7% and 10% damage up if used with 0,1,2,3 lillies respectfully
Assize - now provides mp = 10% to each player based on their maximum mp
Presence of mind - provides mind increase 1%,2%,3%,5% if used with 0,1,2,3 lillies respectfully
Plenary indulgence - now will heal base potency once timer wares off based on stacks, stacks now reduce dmg recieved by 2%,4% and 6% respectfully

But you don't address the core problem : lilies. Let's all agree. We're speaking of high end content. So we won't heal with GCD spells.
I would keep divine benison as it is. You can spam it quite frequently, even with no lilies.
Your assize sounds strange to me. We don't need more MP. It's actually one of the best WHM abilities as it is now. Maybe buff its healing/DPS potency.
I like your presence of mind. But you lose what's good in current presence of mind.
So your plenary is a soft excog, with a defense up buff... makes sense in a way. But that does not solve the clipping.

In pure gameplay, White Mage needs :
- Efficient clipping solutions
- New lily system
- Agro management

I'd suggest that as fixing solutions (not long term):
Fluid Aura : 60s CD, halves enmity.
Lilies : each Cure, Cure II, Stone, Aero II (initial damage, not DoT damage) that crits has 50% chance to grant a lily. Lilies work the same way, but Secret of Lilies II removed and changed as "3 lilies : Stone and Aero III cast time reduced from 2.5sec to 1.5 sec) -> ALL HAIL THE CRIT META
Stone and Aero III : cast time 1.5 second (with three lilies)
Aero III : duration 36 seconds (so you can roughly align 2 Aero II on one Aero III)
Presence of mind : I'm having trouble with this one, because there's no need for it if WHM gains on mobility based on my ranting. Maybe just keep it as it is, but reduce CD to 120sec for better alignment. Grants three lilies on use ? Then you have an opener.
Plenary indulgence : Confession now just stack with no timers. Potency to be revised, but this essentially means each GCD AOE heal grants you a future free oGCD heal. I'd steal your idea that confessions also bear a small damage reduction as long as it's active. For balance, I would not stack three degrees of confessions, just make a flat confession buff, granting a free AOE heal of medium potency and passive 3% dmg reduction. Lilies affect Plenary too.
Largesse : no longer a role action. Increase Mind by 10% for 15 seconds.
No major changes on the rest, but I'd buff Asylum and Assize.

This only nerfs SCH by taking out Largesse for the Adlo spread.

[Crushnight]

But you don't address the core problem : lilies. Let's all agree. We're speaking of high end content. So we won't heal with GCD spells.
I would keep divine benison as it is. You can spam it quite frequently, even with no lilies.
Your assize sounds strange to me. We don't need more MP. It's actually one of the best WHM abilities as it is now. Maybe buff its healing/DPS potency.
I like your presence of mind. But you lose what's good in current presence of mind.
So your plenary is a soft excog, with a defense up buff... makes sense in a way. But that does not solve the clipping.

i tried to envision with current lilies system in mind granted system is horrible for high end healing (just make crit regens or something count on regens to get them) i also didn't want whm completely stepping on ast toolkit with balance etc so i tried keeping the pure healer mentality to get a single target increase = to rng balance draw need to use 3 heals ast is still better with it being ogcd and no mp but whm more reliable etc.
with the assize 10% mp it was meant to be gives free 10% of caster's maximum mp to all players hit and i have no idea how to reduce whm clipping issues short of changing a few cast times. As for presence of mind i couldn't see them having both a spellspeed increase and mind increase and choose the one i think be more worthwhile for whm