Actually, the Bills rarely used play action...which was confounding considering how much they ran the ball. They also rarely ran screens to their fastest players, in Spiller, Graham, and Goodwin. Instead they ran them to FJ, Chandler, and SJ on the few times they dare attempt it.
My top complaint was the simple play book though. Predicting what the Bills were going to do on offense was ridiculously easy. It's really hard to be good if the other team knows exactly what you are going to do. And I don't buy that crap about simplifying things for young QBs. It was beyond simple, most other rookies and backups can run a much more complicated playbook than the Bills had. If the Bills QBs couldn't learn it, once again that's on Hackett.