The irony is that Conjurer recently getting the group healing spells and the strengthening of the Thaumaturge are the only things that doesn't add up... unless you consider that they may be looking to create a clear difference between White Mages and Thaumaturges once the job is unlocked. Likewise with clear behavioral differences between Conjurers and Black Mages.

This creates the opportunity for intra-city conflict, which is a magnificent story-building tool.

Also, have a chat to the conjurer's guarding the Stillglade Fane in the clearing - one speaks of there once being rituals designed to anger the elementals and her lack of understanding why that would be.
I smell a revival of such practices, much like with the Grand Companies. The Conjurers would be at incredible odds with such Black Mages in Gridania and that is part of the point.

That way we have both a protective and an offensive role on both the divine and elemental trees.