Idea for 4.0 Tank Class

[Anova]

Despite the need for heavy armor, I also think Tank is the best role for RDM. It's the only role in the current meta that can effectively combine dps, healing, and at least some tankiness. It's the same way they designed DRK in a lot of ways. But the best example is probably warrior. It is the only job able to do all 3 roles in a solo fight against TEX. The alternative is a support dps like Bard but only melee.

Anyway, I like the idea but I would like to know how it fits in to the current meta. Warrior is a tank with huge hp buffers and burst dps. Dark knight is our token magic tank also with burst dps. Paladin is our physical tank with a smattering of healing. How would Red Mage fit? Is it a magic tank with healing? Or do you imagine it some combination of the 3 (able to switch roles depending on stances, like AST for healers)?