i'm quite ok with the armory system really.
classes are a bit more generic, and offers wider options, while jobs are more specific, and powerful in certain area.
my only problem is that lv 50LNC=lv50 DRG; and DRG being quite limited in the skills it gets (all jobs for that matter; they only get 5 each)
So i would want to see the jobs as separate, and you lv them separate; and they have 16+ skills of their own. From looking at the old 1.0 system, i thought there was so many interesting skills back then, it's sad they are gone.
It would be nice if for example CNJ had some basic elemental skills like then, and you unlock Elementalist, that can use the more powerful element spells. Dark/Umbral BLM was interesting too.
But in general i think it's good that lancer is more generic, and can use cross class skills to greater extent than DRG. Otherwise DRG would make LNC Obsolete.

Crystarium system might be nice, if it had more *branches* Or Grid Sphere; you develop in different directions, choosing if you wanna start out defensively or offensively; which skills you wanna learn first. Maybe going for Fire build early on, for AOE party grind.