Red mage in its "classic" form won't work, because it will just be casting fire, blizzard, thunder, and cure, cure2, regen. Yes, I like the Red Mage outfit and hope it ends up in FFXIV someday, but people are either dreaming up the most boring class ever (gimped black mage/ white mage combo) or designing something in their heads that isn't really a "classic" red mage.

As for blue mage, let's get that in the game. Enemy magic would do well to COMPLEMENT the spells we already have in the game. So... how about Blue Mage is a questline, similar to the moogle mail quests, where we gain access to Blue Magic as a CROSS CLASS skill line? Blue mage abilities could fall into damage, tanking, and healing categories, and it would be entirely up to players which abilities they want to slot at anytime. As we "level up" Blue Mage, we gain some blue mage glamor gear and pick up a passive talent or two. Thousand needles, Lv 5 confuse, choco meteor, the awesome class/ ability combos are endless.