The early look at the NFL’s new kickoff rule in Thursday night’s Hall of Fame preseason game didn’t provide much interesting data. Broncos head coach Sean Payton doesn’t think the preseason as a whole will be much more fruitful. The veteran coach said Denver might use a joint practice with Green Bay to work on the real stuff, but otherwise figures most teams will play coy until the regular season. “Every team in the league will hold on to some of the things they want to do for Week 1,” Payton said.