Asking for a Mage Tank if DRK Fail to resolve the Lack of Tank.

[Duelle]

They can get around the problem by adding completely new jobs (as most "job system" FF games do), but there's a long list of favorites both the developers and the players want to see added first.

They can of course turn non-tank classic jobs into tanks, as they have done with Warrior and Dark Knight, but there tends to be a fine line here with what players will accept. Though Warrior mostly went off without a hitch, some people (though still a minority I think) have complained about Dark Knight being a tank. If they go too far with certain jobs that people love for a specific thing just to make them fit the tank role, you'll have a lot of unhappy players. Red Mage in particular is very touchy given its already-poor treatment in XI.

To add to this, the job's appeal is not enough to draw people to tanking on its own. Gameplay also has a large role there.