Why do the Bills not run a 3-4 defense. Many of the elite teams in the NFL/AFC run the 3-4. I know you have to have the right personnel as well as a coach to run this but if you look at it many of the playoff teams or teams that were on the brink of playoffs run this defense. For instance, Ravens, Patriots, Steelers, Bears, Dallas, San Diego and I am sure there are more. Looking at all of those teams I have just listed most if not all have fantastic defenses. It seems to me that the Cover 2 is a dying defense. It was great when first introduce in Tampa and quickly was adopted by many teams. On this subject as well I feel that the Bills adopted this defensive strategy way to late compared to the other teams. Now that this type of defense is in decline i feel it is imperative that the Bills find a niche that will work for them on defense. This defense is all over the place as far as sometimes they show up and play extremely well and sometimes they are god awful and there seems to be no in between. In my opinion I feel like a change needs to happen to the defense in order to stay with the times. That is my two cents take it for what its worth.