Red Mage has always been a jack of all trades master of none so lets take everything it has

-Temper
-Phalanx II
-Composure
-Gain spells
-and all their cures

heck just delete red mage from the game files and rename all of the red mage text to "Rune Fencer" problem solved and in the past all of red mage text could be renamed to scholar lol.

*Sarcasm*