I'd love to see Blu in as a DoM tank.

I think that with a bit of creativity (both on the part of the developer and players) they could make the class feel like a blue mage even in our current system.

Make the job quests focused on learning skills from mobs - done.

I don't get people who need everything to be so literal. Probably same type of people who don't understand that Astrologian is Time mage and keep asking for that...