If we were to get Red Mage I could only see it stemming from gladiator. "A support DD from a tank, that's crazy talk!" So is turning a DD into a healer... oh, hey Scholar, how goes? The reasoning is simple if you can take off the blinders. Red Mage's trick isn't the magic, it's the swordplay. Sword and shield. Barring making another sword and shield class (which will never happen) that leaves gladiator. It makes sense that the next Job off gladiator won't be another tank, it already has a tank Job why give it another? The idea of the Job system is to explore the possible roles of the classes in question, like DD and healer with arcanist. People keep telling me ideas like warrior/gladiator DDs and lancer tanks are stupid, but what other roles do they have left to explore with future Jobs? Especially when we get the archer's second Job, that's really going to throw people off.