Earthly Star has been brought up several times in this post, I did want to point out that it has a 60s CD so I don't know if it's necessarily the super OP heal people say it is. The potencies could maybe be nerfed a bit, but the CD seems to balance out the high potency. And, again, I do want Balance to be nerfed - partly because it discourages me, I feel, from using other cards because I'm tempted to Redraw for a Balance.

I don't think WHM is going to be as dead as people are insisting (claiming that they could delete the class right now and we'd lose nothing is sheer dramatics, as is claiming nobody will play WHM or take one - it's not like you're going to be unable to clear because you brought a WHM lol). Doesn't mean it can't get some changes. I main AST but I still love WHM.

If White Mage is going to get anything for utility, or a better mechanic, it needs to be unique, not a rehash of what SCH and AST have. A lot of people are asking for a spammable shield for WHM like Adloquium or Nocturnal Field; shields like that should remain with SCH and Noct AST (though Divine Benison should not require Lilies to use). Also, realistically, how often was Stoneskin used during a fight with its long cast time and high MP cost? People are also asking for party damage buffs similar to Balance or Fey Wind (even seen Balance asked to be cross role when cards are a key part of AST's identity). White Mage is a powerful healer with a lot of emergency tools that primarily uses HoTs; anything added should reinforce that.

Lilies/Confession need to have a higher proc chance and Lilies need to do something other than lower the cooldown on those spells. A potency increase on the spells affected would be a nice addition. Confession also needs to either have a longer duration or an additional effect (possibly both). Plenary Indulgence being an AoE heal centered around the people with Confession that heals regardless of if the people nearby have a stack or not would be nice. It could be an interesting way of getting heals to that BLM that insists on standing at max range. I don't think Lilies/Confession proccing off only Cure I/II is bad. You should not just be able to spam Medica to victory, Cure should have a place in your kit. A higher proc chance on Lilies could certainly help needing to "spam" Cure because you're fishing for one. I also think a CD that guarantees a Lily for every cast you make during its duration would be really nice. It seems they want WHM to have access to those tools more often as part of their playstyle (big bomb heals) and I don't necessarily think that's wrong.

As for utility, WHM doesn't necessarily need to bring a flat damage boost to everyone else to have something compelling. I like the idea of an improved Protect, as well as an inverse Cleric Stance (where you can't DPS in exchange for giving someone else greater damage capability). WHM is very capable of solo healing as well as doing crazy healer damage, so I think comps with 1 WHM, allowing for another DPS could be a thing, as well as comps where the WHM just sits there and does DPS. If that becomes the norm then they do not need much in the way of utility.

The final thing is the cross class abilities. It's pretty unfair that they have to use up all the slots to get back what they used to have, but it was also very annoying in the current setup to have to take so many things from WHM. All the healers should have options for what they get. Easy solutions to it:

-Give everyone back their class specific dispel (just adjust the level you get Leeches at) and remove Esuna from cross role;
-Give everyone Protect or some form of it (they seem to not like having the exact same abilities copied across classes with the same name and icon, which is fine I guess, just give them different names or something);
-Get rid of Largesse and give back Divine Seal, Synastry's potency increase, and (I'm assuming) Dissipation's potency increase.

This gives WHM back 3 of their abilities, freeing up space for 3 unique healer cross role abilities.