So the main problem here is that RDM and SMN have utility in raise that is situational, but they pay full time for it with lower DPS.

I think a way to remedy this would be to make raise a caster role action or leave it as is, doesn’t matter, but make it apply a “-20% damage dealt for 1 minute” debuff to the caster, call it “aetheric imbalance” or “aetheric overexertion”. Make it a stackable debuff in case that chain raises happen. I believe this would solve the problem, this way RDM and SMN (and BLM if they make it a caster role ability) would pay for their situational utility only if they use it and not full time like they pay for it now. It would also fit lorewise since casters are not healers, they are not accustomed to using aether to raise their comrades.