Having stayed at the Poly last year I can see a refresh of the bathrooms, the main room itself was fine and fit the theme. I'm not sure what they would change.
Same with GF. Haven't been there outside the lobby/concourse in a few years but wonder how you refresh a 1920's themed hotel.
It's not that the resort is "dated" (after all, there's no outhouse and no musty odor, so they weren't and will never be totally on-theme) but the resort rooms do have a lot of damaged furnishings. And the bathrooms (talking about the hotel side of GF) don't justify $850/night at all. They are like something you might find in a secondary bath in a very inexpensive townhouse.
Some of the same problems exist at the other monorail resorts -- it's not that Contemporary is no longer Contemporary (I don't even know what that is, really) or that Polynesian is no longer Polynesian -- it's that stuff in the hotel rooms has been so beat up and a lot of items need to be replaced with new, nicer, and more functional things. I'm more of a stairs kind of girl, but the condition of the elevators at Polynesian is just atrocious.
I, personally, have no problem with storage in any of these three resorts, but I think a lot of times that's an issue for families in these rooms so that is something that could be incorporated into a refresh, too.