What Roles would you like for Samurai and Red Mage?

[Intaki]

Tank and Healer roles are boring because they focus on something OTHER than just "Kill everything."

No, tank and healer roles are boring (to some) because they lack mechanical complexity. That's not to say the roles themselves are not complex, but their complexity relies much more upon the encounter and the player-to-player team interactions, rather than the intricate internal complexity inherent to the classes themselves.