Blue Mage should not be a Limit Job. Limited jobs shouldn't exist.

[Jeeqbit]

And they'd have to get rid of a good amount of spells... Stuff like Final Sting, White Wind, Bad Breath, anything that causes statuses like Frozen, Paralysis or Petrify, Level 5 Death... And others depending on what role they would want it to be...

I don't agree. White Wind doesn't really unbalance anything in a world where every job has heal abilities, including WAR, PLD, DNC, didn't MNK get one now? and didn't we get a healer-less M4S run?

We can also use the Red Mage argument: they can use Vercure, but it's not socially accepted to do it unless everyone's on the brink of wiping anyway and at that point, it's only got a small chance of salvaging the pull.

Bad Breath, Frozen, Paralysis, Petrify and Level 5 Death would simply not function on bosses. The only one of those things that even functions on bosses, as far as I know, is the damage down from Bad Breath. Realistically, that is comparable to Reprisal and they could just give it a temporary immunity like stuns have to balance it with Reprisal. Even then, you could argue that if the entire party rotates Reprisal/Addle/Feint/Raidwide mit it produces a similar to maintaining Bad Breath.