Personally, all I want for RDM is for the Devs to not throw any random new mechanics at the Job - leave the Enspells and whatnot to future Jobs (Spellblade job similar in style to FFXVs Ignis? Yes please!)
I'd just want them to look at the parts of RDM that already work and elaborate on them.
Thus I like the Idea of more Manaspenders, Melee-Skills and Support options.
(Also, can we just get rid of Verraise? And Resurrection on SMN? I'm sick of just being the Rez-Battery xD Make Caster-rez a role skill on a 90 Second CD or something so we can have it whenever we need it but can swap it for something more useful if we don't)