I've watched every Bills play this season. If I were to critisize the defense it would be a lack of talent at the CB position. That being said, the Bills are 5th in the league in points allowed. Not too bad considering the multitude of injuries. On offense, I would have to say lack of execution and moronic penalties are more to blame for lack of production than scheme and play calling. Even with that said, the Bills are 5th in yards/game and 5th in points per/game. Now I haven't observed how the Bills practice, so that might be where the coaching staff is failing. However, on game day, I have to say it's the inconsistent proper execution of the players that has to be blamed for the fans wanting the coach's heads to roll.