Eh, doing Blue Mage that way would be... not really super feasible. It isn't just about balance of the skills themselves (they're a huge hodgepodge so it would be a lot of work to actually create something resembling a normal job) but about how acquisition of the skills isn't reliable either. While I think they could just toss the job into Duty Finder as is it would cause a lot of problems.

I'd definitely like to see them do more with Maiming Gear though, it's kind of weird that Dragoons are the only ones who use it. But given Ninja and Scouting Gear it's just kind of the norm with Melee DPS to have things kind of oddly split up that way.