There's 2 major problems with WHM...
1) Too many redundant healing spells - 14 in total including regen/all abilities
2) Not enough damage potential & access to buffs/debuffs
An accurate depiction of a WHM from looking at the skill lists from FFX-2 & FFIX
https://finalfantasy.fandom.com/wiki...l_Fantasy_X-2)
https://finalfantasy.fandom.com/wiki...List_of_spells
Things like Haste (I-II/All are options), Full-Life, Auto-Life, Confuse, Berserk, Might, Silence, Reflect, Dispel
Also bring back Fluid Aura, it has massive combo potential in any situation while playing the game solo which for MSQ & side quests is 75% of the game, while trying to control crowds of enemies and inflicting status & dmg combos ...
Stone xx Fluid Aura xx Aero xx Holy xx Stone
It allows you to also run away when necessary since a WHM's defense is supposed to be low, and effective in a party as well, Bind (or Stop) allows more time for potential heals and dps. Also how about a better function of the Lily Gauge, remove the spells related to it and just allow 1 Lily equal to one extra stack of any spell.