Even with the materia change, that's not reinventing the wheel, just utilizing the damn wheel they invented back in 2.x. It'd still just be numerical gains and doesn't change how your job plays.
Having non-numerical bonues on all equips (not exclusive to weapons) would do a lot more to make a job feel empowered with each upgrade or gear milestone, compared to what we have now
The current armory setup doesn't really allow for more than one sets per job. Even if people are still going to min/max (and they do it anyway with numbers that are theoritical in value and still don't lend to gameplay changes), the option is still there for people who want horizontal progression or otherwise change up their game.
