I expect something in the 7-9 range, maybe 8-8, for this team. The following has already been said a few hundred times, but I agree with the thinking.
Defensively, the Bills are going with a completely different scheme. This will certainly cause problems as the players learn it. Also, although they have some 3-4 players now, they need more and better. That will take another year of the draft and free agency. I think they will be better at stopping the run, but I worry about a pass rush, and I worry about the OLBs in coverage.
Offensively, I think they will run the ball better this year. The O-line will be better but not good. Again, here, the Bills need to draft or trade for a LT next year (maybe this year). The same goes for QB unless someone on the team really steps up, the Bills will need to draft a good one next year. WR is another potential trouble spot. Frankly, I’m not sold on any of the Bills wideouts.
Special Teams should be good again. They have a great punter and great return men, too. Block and tackle well, and they should be okay.
For me, that all adds up to 7-9. Now next year, with another draft and a year of learning the schemes, the Bills could be looking at the playoffs then.