Super Bowl Celebrations

For many years, the Super Bowl celebration has been the same. One cutscene. My suggestion is to create multiple events in the schedule to celebrate. The week after the Super Bowl should be the parade. How your Player/Coach/Owner behaves at the parade can provide stat boosts. Media appearances where the answers you give could effect your free agent status or get other players to sign with your team. Visit to the White House, Ring Ceremony, Raising a banner week one of the next season, etc. 

Regardless of if it's Superstar or Franchise mode, the reward for the countless practices and minigames to grind your team or player to be good enough to win a Super Bowl should be more that a single cutscene. Especially one that has been used to for several years in a row.