Coaching: The Texas A&M coaching staff suffered significant turnover following an 11-2 season that culminated in a no. 8 finish in the final AP poll, arguably their third-best season since Bear Bryant was on the sidelines. The Aggies will be replacing both coordinators and five assistant coaches total under Mike Elko as he heads into his third season. To lead with the offense, offensive coordinator and quarterbacks coach Collin Klein left to become the head coach at Kansas State, taking tigh…