This is where the HC comes in... SF can only do what DJ allows him to do and I believe it is the responsibility of the HC to provide the structure in which teh other coaches operate.
For instance, Dan Henning has been doing a decent job in Carolina, but I believe DH's success is dictated by what framework John Fox has laid out for him. Left to his own devices, like Marv did in Buffalo, and the guy was a disaster.