Next Tank Job?

[Gamemako]

I'd LOVE if we had a caster tank like Red or Blue Mage...

Blue Mage could be a tank depending on how it's implemented, but Mystic Knight makes the most sense for a magic-oriented tank. You already have sword, armor, and spells for use at close range.

If SE ever adds Ninja, I think they should make them an evasion tank like in FFXI

Both unlikely. Ninjas were never supposed to be tanks; they ended up that way due to gimpy balance and were only eventually given enmity boosts because of how the players had adopted the job. Evasion tanks also don't work in ARR, which relies heavily on spikes to pressure tanks.

[jomoru]

Blue Mage could be a tank depending on how it's implemented, but Mystic Knight makes the most sense for a magic-oriented tank. You already have sword, armor, and spells for use at close range.
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Armor is arbitrary. They can make tanking equivalent Leather, robes etc. Saying that they should make another heavy armor type is kind of missing the point when people ask for visual variety, right now if you tank or heal you have the least options for visual choices while DPS has unique stuff for almost every class(except caster) on every tier.