I firmly believe this saying,one that was said by Spurs NBA Coach Gregg Popovich many years ago and one that Belichick himself has followed all these years.
I am a fan of the TEAM - Its never been ONE player and it never will be.
I love Brady now and even when he goes to his new team and thank him for 20 glorious seasons,I thank him for his job in playing a big role in winning 6 Super Bowl Titles and the AFC East almost every season but as the saying goes Brady would not have done all this without his teammates and no one player is a dynasty by himself.
The Patriots are likely going to take a step backwards sans the leadership in Brady gone but you can't go forward if you are stuck in neutral and have to try and pick up the pieces and move on.
If it takes awhile to get back to eliteness so be it,The team will be competitive as long as Belichick remains head coach
I think Jacoby Brissett returns now with Rivers in Indy so at least we have a player with familiarity should this happen - We will see