Quote Originally Posted by Chasingstars View Post
I assume you are being obtuse or just ignorant about blue mage and its spells when you say its a 'stupid delusion of it becoming an all rounder that can steal a spot from other roles'.
I assume you're being obtuse or ignorant about the fact it's only allowed to do so through PF and in outdated content. A BLU is only tanking or healing if the rest of the party is OK with it.

Good luck building a roulette system where you can get a insufficient tanking BLU replacing an actual tank. And no, they wouldn't make its tanking and healing skills be good enough to replace actual tanks and healers, if made a full job. That goes against the design of the battle system the game has since the start.