The Pats are quite possibly the best coached team in the NFL, but Belichick has always had one great flaw as a GM: projecting talent from the college ranks into the NFL. He's had a handful of good-ish players, Brady, and almost nothing but busts when you look at his drafts. Brady covered that flaw. He could make a below average wide receiver look pretty good. His short passing game can open lanes for your wasted of a first round pick runningback. Now that Brady's gone Belichick's flaw is only more important. The Pats lack talent. Trust me, I remember the beating they put on the Jets a couple of weeks ago, but they are only marginally better talent wise than even the Jets. And most of that is because of the differences in where Jones is to Wilson.
This last off season they spent 80+ million in free agency to try to upgrade the roaster. 1) They'll finish with the same or fewer wins on the season: 7. 2) After the season they will have to go into rebuilding mode because it's staticatically proven that spending that much money in a single free agency period will inflate your wins for that season but not the following. I predict that unless they remove Belichick as GM, the Pats are truly over and will be for quite awhile.