When the Dallas Cowboys remade their coaching staff, there was a noticeable difference between the planned direction for the offense and defense. In keeping Kellen Moore and moving Doug Nussmeier to quarterbacks coach, the evident intention is to keep the offense as consistent as possible for the continued development of Dak Prescott. But the defense is expected to make a much more radical shift. The biggest impact may be for the defensive tackle position.
Under Rod Marinelli, the philosophy was to defend the run while going at the quarterback. His emphasis was on fast and therefore lighter players, and there was an emphasis on 3-techss while 1-techs were more of an afterthought.