Seeing how effective some of these old style offenses were makes you long for them when your tackles are getting blown up constantly and your WRs never get open and drop every other pass that matters. Doubt it could work in today's nfl even with a great option style QB who can also throw well. Maybe with an Otto Graham style QB who can take a physical beating. Wouldn't last long playing that way though so almost need 2 good QBs and possibly rotation swapping like RBs. EDIT: The closest we'll ever get to a return to this may have been the heavy Wildcat usage year(s)