Belichick has given: 9 Superbowl trips, 6 rings. We're in the Superbowl every other year. Always picking end of the first round. Just the last 5 years we won 3 rings, went to a fourth Superbowl.
This year we had 26M in dead cap space (thanks to Brady, and cutting AB thanks Kraft). Then 8 players opted out.
Next year we will have 120M in cap space and a top15 pick.
The only tweak I see is to physically banish McDaniels from any draft process and don't waste draft picks on QB/WR/TE due to totally unreliable scouting from our OC. Zero offensive skill players drafted or developed the last 8 years by this inept OC who is nothing without Tom Brady. That's the only tweak. We are excellent at drafting all Defense, OLine, and finding RBs.