The new Borders in Ann Arbor (the concept store I mentioned earlier) has a lot of box sets, in the usual glass case. And since this is a new store, I'd think that if they were changing their display that they would have done it from the get-go there.
For the book-buyers among us, the new Borders is now placing as many books as possible face-out, instead of spine. Which means they have to carry less book inventory