Top of my wishlist for new DC collected editions:
THE COMPLETE GRANT MORRISON ACTION COMICS
Collecting Action Comics #1 vol 2 through Action Comics #19 vol 2 (including Action Comics #0 vol 2) in a single edition, either softcover or hardcover.
440 pages in a single edition is not impossible. And with the ultimate fate of the New52 Superman concluded, it would be a great way to remember Nuperman's best run.