The result of making Blue Mage a regular job would be a standarized husk of its former self that, at best, no one would care about any more that they would for the rest of the caster jobs. In other words, a waste of time where no one ends up winning all so we can say BLU can be used in current content.
Not to mention that the sole fun of BLU was literally about collecting spells and that any attempt of turning that into a regular job would likely be "same spell, different visual effect" which nothing but a placebo.
BLU is not meant to be a conventional job, it's meant to be its own kind of content. And we don't need to kill content. We need to nurture content and improve upon it. Increase the possibilities for BLU as a Limited Job, be it with more Carnival fights beyond the story one. Hell, I would be all for making Eureka accesible for BLU taking into account their customization options. Just drop it with pretending that standarizing BLU won't be an idea we all would regret should it come to pass.
