SCH in Feast absolutely needs to be Buffed.

[Rubytoe]

Square Enix please....

I main SCH in PVP and I constantly get told to play AST no matter how hard I Work or Win.
Most players blame specifically me if we lose, JUST because I am Healing on SCH.
Even when my team wins in the first 30 seconds of a match i still get told, "You should play AST, you'd be unstoppable."
I'm so tired of seeing AST in Feast pvp, It's just really good, in any situation..
The only thing that I feel is lacking on AST is it's Dot/effect, thats... a cookie crumb of "lack" compared to what SCH has.
Summoning Seraph is our best tool outside of our Dot/Effect, and even when Seraph is summoned it is just not enough.
SCH needs buffs and here is what I think should happen in my vision.

Broil III:
(Plan A)If potency does not change, then the Next spell cast after Broil III should be instant.
That change would help with the whole "I need to DPS to have access to Lustrate plan Square has going for PvP SCH".
Since that would allow you to instant cast Adlo/Physick after Broil III.
(Plan B)If the potency changes, it needs to be increased to 1400 like all the other healers main damage spell. Dissapation's speed buff is not going to make this over powered.
I really don't see why Broil III is 200 less potency compared to Glare/Malific anyways.

Aura Blast:
Needs to be at 30 seconds not 45 + 1000 potency per target hit.
If gravity and afflatus misery can do AOE damage so should Aura blast, also gravity is at a 30 sec CD. Why is Aura Blast at 45?

Dissapation:
Recovers 1000/1500/2000 mp on activation, which everone seems balanced. "wishing for 2000mp, but doubt it lol"
If anyone actually plays SCH at a high level in Feast, your MP is going to starve fast when spamming Adlo when you need to.
I play all 3 healers and when playing AST I almost NEVER run out of MP or come close to it.
Keep the spell speed buff effect. You can activate Dissapation every 5 broils or from building Fairy Gauge with Aura blast/Broil III.
The speed buff is not even that good, It helps but it really doesnt feel like a reward for using Broil III to build for it.

Chain stratagem:
10 seconds instead of 6 seconds of Damage Up for Target.
45 seconds instead of 30 seconds to compensate. Lines up with Dark Knights Soul Survivor.

These changes are not going overboard with SCH in Pvp. Trust me they could be more Buffed.
I feel like it would just help them catch up to AST.
I also think white mage deserves buffs too. I'd rather SCH get buffed than AST get nerfed,
because AST is really fun to play in PVP and is if not the best healer in pvp.
Sch is a huuuuge chore to play, and I feel like the black sheep, every time I enter the feast Arena..

[Quor]

If not some buffs for WHM or SCH then a few choice nerfs for AST. Removing the Abridged buff and one of the four separate effects from CO would go a long way to bringing AST in line. WHM would be fine by comparison then, but SCH could still use some help. Maybe start them with a charge of aetherflow right off the bat, as well as a few of those CD reductions you mention.

[Brandedblade]

They're planning on adding more abilities to the pvp jobs in 5.1, hopefully those new abilities will include an actual aetherflow cooldown. I love the concept of being the aggressive healer who builds their resources through combat. But they're just to vulnerable without being able to react instantly to burst.