Please do not lock Jobs to the Weapon Class that unlocks them.

[Wynn]

Actually thats probably the point. Black Mages would specialize in casting damage dealing spells, so they probably would be locked out of healing, yet gain a buff to elemental damage and access to new spells and abilities. Its most likely going back to the job system style of FF III,IV,V, and IX where characters had clear defined roles instead of having access to multiple skills sets.

Did you even read the battle blue print letter? You're just completely assuming what you want it to be.