That first weekend is so glorious and it could be the same for CFB. That would be so much fun to watch. So much more intrigue than watching the same 6-7 programs playing in the CFP nearly every year.
Cinderella is fun in sports and CFB needs that. In CFB they kill Cinderella before she even gets to the dance. This is what the casual fan wants. They want to see Cinderella overcome the 800 pound gorilla and win.
Picking between Clemson and Ohio State or Bama is tiresome every year. It is mostly just fun for the fans of those teams because none of these teams are really an underdog. Nobody for the casual fan to cheer for.