At an absolute minimum bane and miasma are back.
Miasma can be 21s.
Art of war applies miasmolysis giving it a use in single target (shorter duration higher potency dot ~15s maybe).
Fester effect on broil to incentivise dot upkeep above broilspam.
If possible, make dot timers like storm's eye, but rather than extending to double, just a tick or two leeway.

Potency upgrade on ruin 2 to make it enough that the second weave slot isn't free, but also isn't penalised as heavily if you chuck an energy drain in.
Potency upgrade on energy drain to ~180. MP generation on energy drain so you can get ~3.5-7k back in a hurry in case of death and it was a recoverable mechanic.

Quickened aetherflow is back.
A new button that converts all galvanise into eye for an eye/vengeance style counterhit. Damage type agnostic.
There could also be a spender for the fairy gauge since it usually sits at 100 because onion is rarely necessary. Or have a dh/whatever boost depend on how full it is.

Seraph, fey blessing, fey union all consolidated back into rouse and possible reduction on indom cooldown to compensate.
Baneful impaction is gone because it's not really a dot in the way that whatever gunbreaker's version of circle of scorn isn't really a dot. It's mechanically no different to an x potency attack. I guess they can't direct hit so whatever.

Fever dream bonuses:
Addendum: Black - this temporarily upgrades Broil IV to Fire V and Ruin II to Thunder V and grants astral fire 3 for the duration.
Addendum: White - this temporarily upgrades energy drain to assize - can't really give reraise here, but it'd replace seraphism as the broadly high healing throughput button.
Helices and Modus Veritas (dots and halves dot duration to double potency). For simplicity, 128s duration proteaohelix where the type depends on the current weather; Modus Veritas probably ought to cost an aetherflow per use.