Blue mage

[Jojozan]

Ha. Guess I am the only one crazy enough to want the Blue Mage in a tank roll.

Hear me out - give a Trait where they add their defenses together (physical and magic defense), and give them Caster/Healer gear. That gives them higher defense than the other tanks, but a smaller HP pool. Maybe allow DoW accessories, have the Saber pack some extra VIT, or add another trait that buffs that a bit.

As for abilities, just as examples -
White Wind - area heal or regen, so earning healing enmity and mitigating damage at the same time
Mighty Guard - mitigating damage
Goblin Punch - enmity generation
Mantra Missile/Magick - ranged enmity generation
Magick Hammer - stun target
Angel Whisper - not-dead-yet button
War Dance - stance change
Night - sleep
Roar/Eerie Sound Wave - dispel buffs
Force Field - mitigate one big hit
Bad Breath - mitigate damage by debuffing the enemies
Pumpkin Head/Frog Drop - grindable damage
1000 Needles - either a big hit or an area of effect enmity generator
Grand Delta/Quasar - big damage move if needed
Control - a Provoke
Self-Destruct - everyone else is dead, so why not?

Have some abilities arrive via quests (say, taught from Hoary Boulder, who has brought the job from overseas and is teaching things local critters don't know), with some extras you can add by clearing dungeons or hunting marks. For example, you have to clear Aurum Vale as a Blue Mage for Bad Breath. Maybe add some TP costs to the big ones so you have to choose what alternates to bring along.

My two Mhachi farthings, anyway.