Scott Pioli takes over and hires pass-happy Arizona offensive coordinator Todd Haley to coach the team, then trades for Matt Cassel. Dwayne Bowe and Tony Gonzalez (if he sticks around) could have big seasons, and Larry Johnson (if he sticks around) won't see as many stacked fronts and would see more goal-line opportunities. Jamaal Charles and Mark Bradley showed some flashes as well.
If the defense (24th in YPA, 31st in YPC last year) doesn't get a lot better (and no, Mike Vrabel's not a difference maker), investing in Chiefs with your draft picks and auction dollars could pay off nicely.