The Marvel of today is a totally different beast from the one that last had the Star Wars license. Being such a bottom line company now, I can't seem them doing anywhere near as much with Star Wars as Dark Horse currently does. And they really haven't done much with the Disney properties they previously acquired.
It might acutally be better for Lucasfilms to keep Star Wars comics with a company that will produce more books, not less. May make more money off the license that way, IMO.