I'd like to put on armor and weapons that you can upgrade, but don't see why we need other equipment...

The way I see it is that there's no reason for other gear/weapons. The only downside I see to this idea is that if you don't require new armor to drop in dungeons there won't be new costumes.

However I don't see why the glamour system can't be overhauled and your actual equipment was just upgraded and you never have to equip new gear, but they still give us visual options (Maybe, more things like halos, wings, accessories).

I'm not trying to sound ignorant or anything but this is really just how I see it. I feel like glamours should be more complicated and gear should be upgraded instead of replaced.