Next expansion: Tanks do no damage, and only generate enmity. Tanks can no longer roll on gear, as tank gear progression no longer exists. Bosses position themselves. Tanks take no damage outside of four tankbusters per fight. If your tank tries to deliberately die, an NPC appears to tank the boss for you. If you're a DPS and mysteriously cannot find a tank to do content with, the Trust system will provide you with an equally capable NPC tank.

Yeah, if the formula works, why not? Just make sure that there are some suitably appetizing melee dps jobs for us all to switch to. Mystic Knight please.