sorry, there are a lot of people who want to take away that aspect and give it only a predefined set of skills. They could give a little more information in game to help people find at least certain spells but that has also always been part of Blue Magic. They know that somebody will always figure it out and post it online.
Finding blue spells has always been side content, relative to the rest of the game. Your "normal" jobs are less than what blue mage is. Limited means primarily that it can't do random groups. The level cap should eventually be gone. If they want to give Blue a specific set for random groups, fine, but it should still require finding the spells, it should include all three roles(even if you have to choose it before queueing), and the freeform mode should still be available.
One thing that makes no sense is that you can't do squadron missions.