According to the dps every new job should be a dps, only dps can have variety, might as well turn all existing tank and healer jobs into dps too because god knows there's not enough dps jobs. Tanks and healers can just share a new peasant class that throws sticks and stones to heal and hold aggro while the dps get to flick their fingers to do nuclear explosions.

Come on people, this has been going on at least since HW. "Dark knight should have been a dps", "samurai can't be a tank, must be a dps", "blue mage tank is stupid, needs to be dps", "gunblade is for dps jobs", "dancer has to be a dps". If you like the idea of a job and it's not a dps job, try it out and learn to play it anyway, tanking isn't that hard and neither is dungeon level healing. I personally find the game more fun too when I can occasionally dabble in other roles as well, that's where the real variety comes from.