Their recent playoff troubles is a concern for sure. There were a few things BB would like to have back from yesterday like the fake punt(not sure who called it) and the lack of urgency in the 4th.
However, looking at the season. A lot of holes were filled and young talent played over their heads. Nobody talks about their injuries because the replacements played so well that you forgot who was missing. On the offensive side of the ball you lost Faulk, Neal, Kaczur, Taylor for most of the season, Gostowski, Mankins missed half of the year, the loss of Moss production. On the defense Warren, Bodden, McGowen, Brace, Wright, Wilhite.
So yes there is concern and frustration for they way the seasons have been ending. But when you look at drafting/signing players and coaching of those players it was a very successful season for the Pats.