As I read some of the comments here, ripping into Fitz and some that were claiming that CJ Spiller was a bust, while bringing up the ghost's of prior drafts like Maybin, we also should not overlook the fact that the Bills have had numerous injuries and for a team that is rebuilding, it is hard to find quality depth. That being said, Bills fans should look at this season as one to build on and not be so pessimistic as we have been during the Jauron years.
We lost Reggie Torbor, Merriman (was lost when he signed pretty much), Kyle Williams, Terrence McGee for the season, while also having numerous starters missing games on Defense. On the offensive side, we lost our best player on the team, Eric Wood, while also losing Fred Jackson, Roscoe Parrish (what a surprise), and Marcus Easley and Donald Jones at Wide Receiver. That is a total of 7-8 starters total, depending upon how you look at thing's. Coming off a 4-12 season, the Bills are not going to gain quality depth in the course of one year.
The problem I see with this team is that they cannot rush the passer and have no pass rush, which a team is only going to go so far defensively without a pass rush. You can blame Fitz, but all the playoff caliber teams have good defenses that can rush the passer. Tampa Bay faded pretty quickly this season after last year's 10-6 record, so I would hope that the Bills focus on defense again this season, so we can get rid of two players that are out of position at OLB in Chris Kelsey and Spencer Johnson. Since the draft is weak for OLB, I would hope the Bills have a shot at Courtney Upshaw.