With all the talent DC has been losing to Marvel the last few years I realized that DC has virtually no real A-list books (besides Justice League, Superman and Batman) that could lure/entice any kind of A-list (art) talent from another company.
Bryan Hitch is doing Justice League but after that I cant imagine anything on DC's publishing slate that would entice him to stay afterwards. If Joe Mad ever decided to come to DC they'd have to do the same as Hitch and give him some out of continuity story.
There's a lot of guys like JRJR who i feel have been around the mill at Marvel and done most of everything and are due to make a jump over but the lack of any real great books are whats keeping them at Marvel. I don't know if Leinil Yu is going to come to DC to draw Aquaman..........