Sorry I guess I just took this part the most than the other parts, and probably did ignore the rest haha
So in result the Job should define the role, the Weapon should defines how the role is Performed.
Paladin/Gladiator-Sentinel : Tanks through pure Defense
Paladin/Lancer : Tanks through maintaining hate through dealing damage.
Paladin/Thaumaturge: Tanks through self-healing damage taken.
Etc.

I meant these combinations, and how the job system would work with the armoury system. I was just saying how those of us probably wouldn't use the pld/lnc option as much maybe due to how people think "this is the best build and we should copy it cookie cutter", a lot people are afraid of pigeonholing but I kind of welcome some pigeonholing if it brings identity, and I thought your system could bring multiple identities to one weapon class. I do get how the job defines what you do, and the weapon defines how you do it, that what this is right?