I think it's odd to talk about BLU becoming a full job. It already is. It stands on its own and does everything and more than other jobs. Pushing for it to fit into all the typical daily activities and content is pushing it to a more plain and nerfed status. All the fun spells would surely be stripped in that situation: Ultravibration, Death, Missile, Doom, etc. Primal spells would likely get cut for stepping on SMN toes. Be careful what you wish for.