The difference is at least with another Coach you don't have too worry about them being overly loyal to underperforming positional coaches, or knowing you're always going to have a bad defense or whiff in FA/Draft.
And even though Payton is still here now, I think back to 2011 etc, when we were truthfully competitive. We are not competitive now. So in reality that doesnt make a difference. To get better you need to make changes, and I think with SP around we won't get any better than we are now.