Healers need other ways to contribute to party DPS instead of boring filler spells.

[KisaiTenshi]

And I say this as I think of how repulsed I always am at noticing my co-healers in most fight content doing the absolute minimum required of them (i.e. not spamming Stone/Broil/Malefic like any decent healer does). Some of this may have to do with their lack of skill, but a lot of it has to do with how healer damage is structured.

Yoshi-P doesn't want healers to be green DPS. Don't expect any expansion of the DPS skills. We might see an Aero IV and Stone V, or Holy II, but you won't see additional DPS skills to make healers have "more to do", they are not there for that.

Every game has the same problem of players not picking the support class, and then crying for nerfs to the support class if they do more damage than the combat classes. That is why healers are the way they are. If any additional DPS skills are added, it will come with a nerf to existing DPS skills so healers still do the same damage they were doing before.

The fact that AST don't have spells that invoke various arcana to debuff enemies either single target or multiple targets is baffling to me. They have arcana to buff party members but can't do the opposite to the enemies? Weird.

They're a support class, not a DPS class. WHM has Repose and Stun(Holy), AST has just stun (Celestial Opposition), and nobody uses Repose even in the content that was designed for it, because gear creep has made it faster to just burn through it.

Besides that, there is a limit to how many buffs and debuffs a monster can have, and certain effects overwrite each other. So if you have two healers casting the same buffs, they are wasting them if they overwrite.