Hypothetical scenario for Steelers fans.We are going into the 2002 season. Gruden is on the outs in Oakland. You have the power to fire Bill Cowher and replace him with John Gruden. The twist is that you are guaranteed of winning the super bowl that season if you do this. If not, then everything plays out as it already has.Do you do it?Basically, what I'm wondering about here is how important is Bill Cowher himself to Steeler fans. I'm really not trying to bash anyone with this question. I'm genuinely curious about how the Steeler fans perceive their club. Is Cowher a must-have?