That depends on what they're aiming for, given that because of things like this (items basically being eaten up by the dresser) a lot of people didn't even touch the system to begin with. I feel like they're first trying to get to as many people as possible, see how stable it is then, and then consider adding more slots.
That said, I'd like to know if the phantom translation I saw that spoke of tying glamour plates to gear sets was true or not, because that's my last issue with the system once it can spit items back out.