RDM is definitely Eureka meta.

[RiyahArp]

RDM Disadvantages:

-is a caster, so will magic aggro. Magic aggro has a huge range.
-can't stun, so as DPS you can't work with your party to prevent hard hits while maintaining dps.
-lunges aren't as useful as you think, especially rearward ones.
-only role action to restore MP. If you die a bit it gets rough.
-you don't actually need that many raises in a party.

I mean, it's great otherwise, but other jobs work well. the big issue is melee, which seems to suffer a lot in content overall.

[basketofseals]

-you don't actually need that many raises in a party.

People drop like a pair of Shisui bottoms at the Quicksand. What hypercompetant Eureka zones are you part of?

[Kohdo]

We need a Field Medic title honestly. RDM exclusive. I've spent more time reviving than filling a DPS role so far
Don't forget bouncing off mobs using Corps-a-Corps and Displacement to arrive at the NM ahead of the rest of the train, and you can use Manafication to do this twice in quick succession.