When he clearly doesn't want to coach here? He wanted Miami, yet some fans are willingly to take him back because we are now his 2nd or even possibly 3rd choice? The guy doesn't want to coach here because if he did it would have happened already.
I think GS would come in like a ball of fire and through sheer will and the power of his personality, force meaningful change that would raise the bar here. Starting from a higher plane than when he first came, thanks to his original efforts, I think he would take us to new heights. I think his flaws would cap his progress, and he'd flame out after a number of years, but he would once again leave us in a better place than he found us.