As Jules Winnfield said to Brett, allow me to retort.
The odds are that Brady would have been an improvement, but no matter what the record I wanted Brady to finish his career here. He more than earned that.
A) None of the players you mentioned played QB, the most important position in football. The funny thing is, the only time we did change a QB it was to go from Bledsoe to Brady. The Brady to Newton move didn't work out so well.
B) A tougher schedule is even more reason to have a better QB.
C) They came close to taking down Seattle, Buffalo and KC this year. Imagine what they could have done with an actual QB.
There's no better way to start a rebuild than with the greatest QB in the history of the game, who still looks pretty good, even at 43.