Signing KJ Wright and McCourty in FA, re-sign Paea, then the 1st round pick produce at an Aaron Donald level (I believe he's up there in PFF) at whatever position along with Fuller/Sutton/Jones/Ego progressing would go a long way on the D side. On top of that, you need Marshall to bounce back, OL stays healthy again, could re-sign DLP to be the C and draft an OT in the 2nd to replace Mills on the offensive side. That team "should" be enough to get into the playoffs. That assuming the coaches/playcalling/etc is an improvement.