If you're only looking superficially, it may not seem like anything has changed at Miami since the school replaced Al Golden with Mark Richt. The Hurricanes finished 2015 at 8-5 and they're 6-4 to this point in 2016. In reality, Richt has helped Miami improve in a number of ways--most generally, and perhaps most importantly, on the defensive side of the ball, where the 'Canes have allowed only 19.3 points per game, down from 28.2 in 2015.
Actually I'm at a loss for how little has changed for Miami in terms of results considering how much different its performance has been.