Yes there have been plenty of changes. But the actual football program, has never gotten over the hump while at the same time never completely fallen down the hill. Walt took over and immediately got the team to a bowl game, the following year was a massive rebuild with the team only winning two games.
Since then: 5 wins, 7 wins, 7 wins, 9 wins, 8 wins, 8 wins, 5 wins, 6 wins, 5 wins, 9 wins, 10 wins, 8 wins, 6 wins, 6 wins, 7 wins, 6 wins, 8 wins, 8 wins.
In that timespan, only once did pitt win 3 less games than the year prior and only once did they win greater than 3 games more than the season before. 1 double digit win season, 2 9 win seasons, 5 8 win seasons, 3 7 win seasons, 4 6 win seasons, and 3 5 win seasons. Never fallen more than 1 game below bowl eligibility and no more than 10 wins, which was again only done once.
The point was while I do see a lot of improvement in narduzzi's program, mainly because he is already where Walt was at the end of his tenure and just shy of where wanny was in his peak years, the program is what it is. It's been a long time since we've seen a really, really bad pitt team. It's also been a while since we've seen a true contender at Pitt.