Something something spaghetti code, if they try to implement an item for that it'll break something. I don't know the exact details, but it is the basic gist of why we aren't getting that.

It, like many other features, has been a thing for years though. People have asked for Glam Dressers to be added to housing. You'd think they'd have sorted it out by now but alas. They only now just figured out how to let us change glamours in Sanctuaries, so I really wouldn't hold your breath.