I mean, some teams have specific people assigned to analyze specific things like determining whether to challenge or go for two points.
I would think there would be some value in having someone work with the research team on mathematical analysis of clock management/game situations, and be charged with performing that analysis in game.
Ultimately it will always be the head coach's call on those sorts of things, but it seems within reason to have someone specifically charged with analysis that isn't the head coach given he is thinking through so many things throughout the game.