Well well well. It's actually surprising that something like this has not turned up sooner given the recent divide: http://profootballtalk.nbcsports.com...l-coming-back/
I obviously have no experience with the XFL, but from having watched McMahon run WWE, I'm not so sure this would actually turn into an actual money making success.
Given my usual struggles to watch bad football, I have a hard time believing I'd have much fun watching a D-league where the dredges of the NFL go to and where terrible football gets played.