If you tied it to job quests and levels then you're breaking a part of what makes Blue Mage what it is. And if the abilities are not legitimate enemy abilities (even the totems are pushing it to me) then it's also a big issue, which means completely reworking them from what enemies use isn't fitting the job either. So far the answers people have either hit balance really hard (just toss Blue Mages into there without changing things, maybe add some restrictions in terms of what they can use) or result in losing what makes the job what it is (that it uses legitimate monster magic).

And I really don't get why Ninja got its own special fancy armor category either. Personally feel they should rebalance the armor categories, but given how they make armor by piecemeal and such it's kind of irrelevant. Healer and Caster after all share armor just with recolors pretty often, same goes for Scouting and Aiming. I guess it matters for the sake of loot distribution, but I don't see any way to fit it when Melee DPS uses three different categories while the other four roles are all unified in the same armor.