Down here in Nashville, the Titans did just this. Fresh start. Complete overhaul of the organization starting from the top. New controlling owner, new team president, new GM, new Director of Player Personnel, new coach, new defensive coordinator, ... They instilled a philosophy via drafting and free agent signings that they only wanted "gamers" - the types of players who live, sleep, eat, breathe football. Ignore the measurables and get tough guys who play with heart and fire on every snap. Massive turnaround in only one year. The team went from laughing stock to just missing the playoffs.