Griever

[Daralii]

And yet we have Jobs that effectively use identical weapons (WHMs Canes and BLM Staves being virtually identical in form) and yet have vastly differing unique gameplay styles, not only in the spells being cast but also the animations of those spells.

So sure, we have a 'gunblade like' glamor options, but lets be real fair, a gun with a bayonet isn't a Gunblade. The Lightning one is probably the only real Gunblade glamor option. Just because we have glamor options that mimic another weapon type (DRK Club for example) doesn't automatically preclude them from adding a Job that uses that mimic weapon as a fullblown Job.

Blazefire Saber and the other XIII gunblades are also wildly different from the versions in VIII and XIV considering they're more like swords that shapeshift into SMGs than a longsword with a barrel and magazine.