I was referring to quality established coaches. You know guys who have a history. Trading Harbaugh for some D coordinator or some O coordinator (i.e Josh McDaniels) is not always the way to go.
If you wanna replace your head coach who has gotten you to the playoffs FOUR straight years and quite possibly FIVE after this season with the flavor of the month coordinator...sure you might be able to do that. How is that beneficial and how is that not stupid.