But think about what a rework could achieve if tanking was actually irrelevant and redundant.

Let's say that you had 17 jobs, of which 14 were DPS and 3 were healers. The boss follows a fixed choreographed dance while spam casting AoE attacks which you have to dodge/heal though, so no actual tanking is required. Of the 14 DPS jobs that you can pick from, 4 of them do significantly less damage than the other DPS, but twice per fight they have the exclusive privilege of participating in a special quicktime event to block a big attack from the boss.

Oh wait. We're playing that version already.