'Starting offense: The Bills defense from three years ago, much of which remains, proved they could play in a 4-3 scheme. Will that translate? That's something to watch for. But comparatively, looking at the offense will be the more interesting option. Both units will likely keep the playbook shortened, but the offense is brand new and over the past two seasons with Rex Ryan, the better unit. Will Tyrod Taylor & Co. look smooth still?'