Copy that! I'm with you pal. If it ain't broke, don't fix it. If you still feel the itching need to change the D, do it in small increments.
One of, just one of the problems of the Bills not winning enough to get in the playoffs is the new coaching regime every 3 yrs. Each new coach wants his own type of offense & defense when he comes in, starts to get players he feels fit that scheme, but 2 - 3 years later, he's canned because of losing seasons, and the cycle starts all over again.
Now we got Rex, and here we go again. Frustrating, just frustrating. 16 years, no playoffs, and here we go again!