So basically you want RDM to be anything other than the master of enfeebling and support magic, the role that that job obviously focuses on from a very early level. Gotcha.Good melee, decent & reliable enfeebling, below-average support. Good support, decent & reliable healing, below-average melee. Nuking can be made to fit somewhere in there, prefferably with 3-5 yalm range for nukes while in melee mode, but either shorter cast times or instant casts on a 1-minute cooldown. That way, you can't do everything at once on RDM by cluttering your inventory with gear.
I'm well aware that any meaningful change would require a notable amount of work and rebalancing, but that's where I stand on the matter.
Honestly I don't know why you guys don't level another job, RDM is not going to deviate that much from it's current path on the way to 99. Hell they even created BLU as a more powerful DD melee mage, and it fits exactly into the niche that y'all seem to be desiring. I know there is an urban myth that RDM is supposed to be some sort of sword master, but SE also published articles that said an army of mute BLM's that kicked ass with their melee skills existed. We all know how likely that one is.