Actually SMN kind of doesn't stack with a lot of stuff, but that is a SMN issue for the SMN boards. Although in my opinion these buffs should have had their own unique separation akin to COR and BRD. (their Aura's do though!)
Things RDM does need I think:
A magic defense debuff series (like dia and bio) 5/10/15% (akin to adding 17MAB)
LVL 10/50/90
A magic evasion debuff -25 and -40 (akin to adding 25 MACC, and 40 MACC)
lvl 45/95.
These abilities can be found on DNC, COR and SMN primarily.
Also because I feel rather saucy,
Regain, lvl 99 3TP/tic.
Hi2U COR Regain and Save TP.
Of course that is if you decide to let enfeebles work on mobs, and our buffs to work on allies again. Then again lots did ask to have our casting load dropped so they could swing their swords, you did a damn good job of it, now undo that because we are a Support Mage, and it is time we were allowed to support again. (ironic isn't it that addressing the concerns of the melee crowd to allow for more time to melee in groups actually removed RDM from being invited to groups all together.)