Not sure how I'd feel about this w/o Alex Ross' artwork. It just wouldn't be the same, it'll be good but it won't be the same. This is still my all-time favorite DC-heroes graphic novel.
I feel the same with Kingdom Come, Hush would be great but they would need to incorporate Jim Lees art into it.
Superman/Batman: Apocalypse was good and they did try to make the artwork more like Turners but they didn't capture it as well as I had hoped.
The artwork is the main downside of Superman vs. The Elites too.
Dark Knight Returns' artwork is phenomenal though, really loved it.