As much as I hate to admit it, the expectations that many of us had going into the season were unreasonable. Think about all the schools that have achieved a few years of greatness then lost a coach. Western Michigan, Northern Illinois, UConn, others. What happened after that? Big drop. Heck, even Boise St is pretty average compared to what they used to be.
Point is, coaches that can do what Napier did the last few years are more rare than we are giving it credit for.
I'll stand with Mike for a few seasons. The current drop is expected. If we don't get back to 7-9 wins per season by year 3, then we might have a discussion about "he's not the guy". But not yet.