While football is the #1 most popular sport in America and its not even close, I still don't see any football league working out that isn't the NFL and college. Once the Super Bowl is over sports fans go with the NBA, NHL regular seasons and especially the playoffs. You also have March Madness and baseball starts in the spring. These spring football leagues have tried going back to the USFL in the 80's and they all eventually fail. Why should this be any different.