Too many "Must-Haves" in the Role Choices Menu.

[Sylvain]

snip

It still doesn't fix the issue that too many skills are too good compared to the others making the choice tuned down to 1-2 skills.

In the healer arsenal, only Esuna is really switchable between each fight.

There is no fight where you don't want Protect, (although we can argue only 1 healer needs it)
There is no fight where you don't want Swiftcast, (unless you dont mind casting 10sec rez , you have a RDM and simply don't find an instant cast useful)
There is no fight where you don't want Lucid Dream (unless you do V2 normal)

Once these are picked, Largesse and E4E are the two best candidate for the remaining skills.
Although E4E randomness makes it a waste sometime. It's not uncommon for the debuff to proc only after the damage burst, if it even procs...
Rescue has very little use as most fight will require the group to move alltogether. Best fight for the skill is probably Susano right now. This skill could be more interesting if it wasn't from the insane input lag this game suffers. I can't recall the number of time I've pulled someone in to see the aoe animation actually hit everyone, yet, the player died alone. A cooldown reduction would also be welcomed.
Surecast can, potentially be useful on Susano if you get paralyzed. But that's about it. (Again, a popular request to change it to allowing cast while moving would make it a viable option)
Finally, only the trash filler Cleric Stance and Break remains. Cleric Stance bonus to damage is so laughable that unless you're reaching for week first clear, the damage gain from this skill can probably be compensated by 1ilv on your Samurai.
We are talking about 5%, on a 90sec CD for 20sec on heal dps. One healer spending of lot time dpsing, with an average dps of 2000-2200, that's barely more than 1% damage increase assuming your do 20sec of dps everytime. Your samurai just getting used to the fight and doing 0.5% more damage will bring more dps to the party.
I mean, missing 2-3 GCD over the course of a fight has probably more impact than cleric stance on your overall dps.
break is obviously useless in PvE.

So what choice do we have? Largesse and E4E or rescue assuming we don't need Esuna.

So again, the issue here is extremely simple.
We can only pick 5 skills, 2 are mandatory, 1 is required by 1 healer at the very least and 1 is boss situational. Which allow, at best, 2 skill for the protect-healer and 3 for the other one. Out of these 2-3 skills, only 3 options are actually relevant, Largesse, E4E and Rescue. One is random as f$$$ and the other one suffer from lag-input.
So in other words, we have no choice which is why almost everyone has, Lucid Dream, Swiftcast, Protect, Largesse, Esuna//E4E//Rescue//LameStance

So until they change and/or add some skill, nothing will change. If they consider the system a succcess great for them, but most player find it to be lackluster, especially healers.