Unfortunately, SE corporate likely sees FF14 as a soulless cash cow and nothing else. The FF14 dev team is the only good thing about the current state of Square Enix, in fact I find the differences between the 14 team and SE corporate to be almost night and day to the point is almost disheartening. One only needs to look at all the other stuff they are turning out for proof of that.
And I agree, a full catalogue would be the way to go. That is how ESO handles it, and their system is designed to save all appearances earned regardless of armor type. Another reason why I point to that as the better example is, (as far as I know) is that you can only even look at the appearances at their appearance changing stations that work a lot like our glam dressers. In fact they even use their own tokens to create outfits in a way that glamour prisms could be used. Though this is for a single character and unfortunately not account wide. Which, lets be honest, FF14 is so anti-alt for the most part that the probability of us getting an account wide glamour catalogue is about the same as the sun coming up in the west.