I have a horrible feeling he resigns as coach but becomes a full time GM or President of Football Operations
This is actually what I am thinking, but I am not as down on it as most. He could be the overall head of football or something, still be the executive coach but bring in or promote a head coach. Also bring in an assistant GM.
People pick on certain bad draft picks by Belichick and say it was more Brady, that Brady covered up Bill's mistakes. But this was a top team for 20 years. No other organization has ever done that and there have been plenty of good QBs. I think part of the problem is that it is just too much for one person to coach the team (often all the way to the super bowl) and also prepare for the draft and other GM duties. Is it really going to be better to bring in someone new to make the important personnel decisions in this critical year? Do you want someone to come in and trade away the farm to move up and take a QB like San Fran did, or otherwise "make a splash"?
I actually think the best thing is to let Bill run this off season but to start to put the succession plan in place, both coaching and GM. But if you move on from Bill entirely, bring in all new leadership, it is probably going to turn out worse. People are convinced that Bill can't pick a QB but who are you going to bring in that you are sure can?