Well, when I first heard about the armory system I was honestly hoping for something close to FFT's system, where you selected 1 job, picked the actions of another, and then had 3 different categories for passives. Tanaka & Komoto had originally intended for us to more or less create our own jobs, using the classes as templates. In that regard, I'm still a little sad about how things turned out.

Besides, as much as I'd love it, it'd be way too ridiculous to pick and choose what passives you got... I would love to take ARC's Accuracy & Crit Accuracy traits and slap them onto MRD.