My spitballing thoughts to encourage dps.
I can only speak on whm cause that's my main and I don't have an intricate enough headspace for the others.

-move affaltus solus to an earlier level (let's say 36) to smooth them out
-change freecure to the following

*Trait: Natural Flow (lvl 32)
'Whenever you successfully cast a spell, there is a 15% chance to gain the "Flow" buff for 15 seconds. While under the effect of Flow , Aero/Aero II transforms into "Flood"'.Flood consumes the Flow buff.

The chance is doubled when using an 'afflatus' spell.

*Flood
Spell
Mp cost:0
Cast time: 1.5 sec
'Deal 350 potency water damage to a single target.
Additional effect: restores 5% max mana (500mp)'

Lvl52 learn a ability named "Abundant Blossom"

*Abundant blossoms
Ability
Instant
'Consume a lily and gain the effect of "Flow".
Additional effect: nourishes thr blood lily by 1 stage, if it is unlocked.'

-Can only be used when 3 lilies are available-

Lvl 72 - Natural Flow upgrades to Enhanced Natural Flow
'Flood upgrades to 'Flood of Light'

*Flood of light
Spell
Mp cost:0
Cast time: 1.5 sec
'Deal 450 potency unaspected damage to a single target.
Additional effect: restores 5% max mana (500mp)'

Thoughts for the changes
- Gives a new dps skill without increasing button bloat
- encourages the use of the lily Guage and gives a lily spender (only available if overflow is happening to prevent the encouragement of just using lilies for damage)
- a bit of mana to help with WHMs lacking mp regen options.
-make sure it's not focused as this could be scholars tool, instead focusing on strong Gcd spells