which was like a made for ESPN product. ESPN was pushing it like primetime news. But summer basketball for NBA wannabees in Las Vegas? I'm not buying it.

As you note, NFL Europe, the Canadian Football League and World Football are all pseudo minor leagues for the NFL.

But I'm hard-pressed to see any way in which the NFL could implement another "minor league" system. College football would obviously oppose in vigorously.

Coming up with fields and facilities at the level needed would also be tough. Creating it now would be made further difficult by the fact that football as a sport has peaked due to safety concerns.