personally, i think the red mage need to be reinvented for a mmorpg, being a melee, that can cast attack spell, heal spell, buff and debuff is overpowered.

make it a melee that can cast elemental spell is already quite close of what do already the ninja.
i dunno what they can do for make it more interesting and more unique. they can either go with the idea to make it a jobs that will use a different weapon or make it a jobs that will not be a mage but more a elemetal knight. i dunno, i feel the red mage will either be too powerfull or not enough powerfull for be good. we can argue that bring it's needed and find some skill that can fit the image of the red mage. however, do it will fill a role needed, do it will bring something to the game and the team?

i don't see the red mage like a healer, i feel Dancer will be better for this. i do see it like a support/dps that for sure. but how make it work is something that will recquire a lot of work. and at best it will not come before the 4.0.....

be a jack of all trade in a solo game is nice, into a mmorpg is often bad, since you can do all, but master nothing, and the mmorpg recquire specialisation since it's game of group, not solo.