The personnel will pretty much dictate what he can do. Last year he didn't have time to get these young guys ready from the jump. As the season went on and he had time to get them use to the pace aand flow of what he needed them to do you could see significant improvement in the defense. He also didn't have much to work with.
Also speaks volume about coach rhule who was a former protoge and surpassed coach snow as a head coach and Snow decides to stay with Rhule all these years. We all have to know by now the role snow had in all of these successful rebuilds that Rhule has put together.
Snow sees something in rhule that I think I am starting to see. A good and decent man who is working his ass off to help his young guys win. It's really cool to see a professional team buy in to rhules program so quickly.