I agree, ACN and it's two Jobs is such an orphan in the game that needs addressing (SCH being the 'odd' Job fit for the class, as ACN was a DPS like SMN is, and even the development team seem to regard SMN as ACN's 'true' Job - if you select ACN at character creation and switch the character's displayed gear to 'Job' it will only show SMN AF not SCH). Personally I would like to see it given to a new base class (a possible candidate could be 'Mediator' from FF Tactics)... but given the way the game has been developing with the classless 'Extra Jobs' I think that ship has long since sailed.

The whole Armoury System as a whole needs to be examined closely by the development team and a decision made on exactly what they want to do with it, as it's long since lost consistency with all this tinkering and experimentation with new systems that don't end up working as well as they should (again personally I'd prefer it if they reverted back to the 'one base class and one Job upgrade on that class', give SCH to a new base class and add base classes to DRK, AST and MCH, as well as RDM and SAM when they're introduced... but alas I don't think that will ever happen).