I'd prefer it if WHM stayed true to what it is instead of getting more mixed with SCH and AST. So no mitigation heals and offensive buffs.

That said, I'd like to see the water element getting more attention. Since Wind is DoTs and Earth raw attacks, Water could have crowd control functions.
Fluid Aura is a knockback, so how about a whirlpool spell that draws all enemies in the surrounding area in/together? Also eliminates the need to have to move to the enemy yourself for Holy

And I want WHM to get Reraise. The concept is already in the game in PotD through a pomander, now we just need it as a skill :3
I just think it fits the role of WHM as the fail-proof safety healer very well.

Also, I hope the whole passive trait thing is getting reworked alongside the whole "shared abilities" pool thing.
It REALLY bothers me how WHM can only ress in battles starting at lvl 28 while AST can do it at 20 and SCH even before the job becomes available (22).