He's the face of the program, loves the school, loves the program's mission, loves the players, sets the strategic direction and culture, recruits, is good at hiring coordinators and assistants who manage each side of the ball and positions well. Can refill when his coaches get hired away due to program success. That is my view of success for Sitake's personality and strengths.
Along these lines, he needs a stronger DC and jury is out on Grimes growing into his OC role. Deliberations end this season or next on the offense. Of course, the results will speak for the coaching staff over the next year our two. BYU is not expected to be a barely above .500 team by its supporters and fan base.