How would they even make another healer job though?

[RyuDragnier]

While I would love to see Salve-maker in XIV, as it was a favorite of mine in Bravely Default, sadly we might not see it. The main reason I say this is primarily because we have to remember AST started out as the Chemist job, wielding a gun, but because the system didn't turn out to their liking, it was reworked as AST. Don't get me wrong, as far as a next healer job is concerned Chemist/Salve-maker makes the most sense, but just curious what they would need to do to fix the system they initially deemed "unusable".

Make the Mix system work like the mudras so certain combinations do certain things, and "lock" each button after using it once in order to prevent failed mixes.