So, you think it's reasonable to have about 20 million dollars of cap hits tied up in Jones, Sheard, and Ninkovich as our DEs, AND you want to "find another Sheard" at a 7 million dollar cap hit in free agency as well?
Free agency is a nice tool to add some missing pieces at reasonable cost every year, but it is the draft which has proven to be our bread and butter in the era of the salary cap.
Why do you think we sit back and watch key pieces such as Seymour, Wilfork, Woodhead, Vereen, Revis, and Welker leave? Because Belichick is looking at the next player on a cheaper, rookie contract that gives us more value. That's how he stays ahead.
Disagree completely. You take different measures at different times and now isn't the time to sell off pieces of their defense it's time to finish building it and reap the rewards from that. They will save money by getting new deals with Hightower and Jones, and the same goes for extending Sheard. The common denominator on all the players you listed was that they wanted more than Belichick had decided they were worth and to this point there is zero evidence that is the case with Jones any more than it is with Hightower or Collins. The cap is going up substantially, the Patriots have plenty of ways to clear space if they want, and they can get Hicks, Jones, and Sheard done and have an excellent young defensive line for the next three seasons and that would be a great position to be in.