I would love to see this happen. Ever since the thaumaturge quest line, it seemed a Chemist class was accepted conceptually by Square Enix.

But, as they say, the devil is in the details. How does one develop a full working class/job from a NPC?

The way I'd like to see it implemented would be like a dps version of Astrologin. The class would have a few base attacks but then would draw potions which they could then use on other members or throw at the enemy for even greater attacks. Of course, the effects of the potions should not be copies of Astrologian effects.

The weapon of the class would be a potion flask.