Despite their bad showing down the stretch, the Bills' strong start was certainly encouraging, and the team would be well suited to build on their 2011 success in 2012.
Buffalo has already signed on Mario Williams and Mark Anderson to bolster the pass rush as the club transitions to a 4-3 front.
Past that, look for the Bills to add on other players that fit their new 4-3 look. The team could use a true 4-3 middle linebacker as well as depth on the outsides.
Talented linebackers remain on the market, and Buffalo would be silly not to at least take a look at some of the free agents left out there.
Gary Brackett, while an injury risk, is certainly an above-average 4-3 "Mike" linebacker who would make the team's transition to a new defense easier. Brackett is like having a second defensive coordinator on the field as the linebacker is capable of making checks at the line and adjusting to offensive looks.
Past the former Colt, other options remain.
The Bills could bring in David Hawthorne, who was a very good player during his time with the Seahawks. This defender knows how to tackle and play the run—he'd fit right in with Buffalo's new scheme.
After the departure of Paul Posluszny, Buffalo has struggled to fill a void at middle linebacker.
With Kelvin Sheppard being possibly the most talented inside backer on the roster right now (I project that Nick Barnett makes the move to outside linebacker), the Bills will look to shore themselves up through either free agency or the draft.
The team has a number of holes that they will need to expend key draft picks on, including offensive tackle and wide receiver.
Should Buddy Nix make a signing to fill the need at middle linebacker before the draft, the position will be one less thing to worry about in late April.