I've completed all currently available content as RDM (great stuff by the way) and I have some feedback about the way RDM works. (This is obviously limited to the 2 EX Primals available)
Generally, the job works just as well as it did in SB, a bit better actually thanks to some new tools that allow for more consistent uptime, at the cost of some potency. Also Scorch is extremely satisfying.
The issue I came across is MP regeneration and upkeep.
Long story short, Lucid Dreaming just isn't enough to keep up with natural MP expenses, eventually you just run out of battery and become dead weight.
I'm on the lowest SPS I can get without downgrading from 444ILVL, which is 1077 and puts me at 2.43 GCD.
I tested this on a dummy, doing my rotation as I would in an EX Trial, Lucing Dreaming kept on cooldown 100% of the time, I completely ran out of MP at the 14m50s mark.
I know that no fight right now lasts over 10m, however, in case I die, or use Verraise, Lucid Dreaming cannot make me regain MP faster than I'm spending it, therefore I cannot recover for the rest of the fight. This is extremely punishing.
I have some qualms with how bad it is to use Reprise (less potency than Jolt 2, costs a whopping 10/10 mana), but it's a non-issue in comparison to how bad the MP regen is.
In short, please either nerf MP costs, or buff Lucid Dreaming, or buff natural MP regen, because 1 death or a couple Raises basically means I'm dead weight for the rest of the fight.