1. Make potions/medicines usable on other players.
2. Equip Alembic and become alchemist.
3. ???
4. You're now a chemist. GG

In more seriousness, no. BLU is horribly designed and implemented in its current state. I think they made the "Limited Job" idea just to give themselves an excuse to be lazy. I would not encourage them to make more such jobs until they get thier act together and figure out what they want to do with them. Personally, I'd rather them just ditch the idea all together and actually implement real jobs. Have some creativity. Why couldn't BLU have been a limited job in the sense that equipping spells gave you points and stats toward one of the three main roles and you could freely flow between them outside of a duty? I'll admit that I was never optimistic about the idea of limited jobs, but with BLU in particular they had so much potential to make the limited job idea shine and... it fell so flat. Everything about the job right down to the quests seems so lazy.