I disagree with your assessment. Wilson has been gunshy ever since he broke his arm in the Super Bowl. Since Wilson and Hawkins are in the last year of their contracts, I would not be surprised if the New England Patriots selected a safety in the first round such as Texas Longhorn Michael Griffin. As a matter of fact, l would not be shocked if Wilson is cut from the team in 2007, especially if he unable to convert to cornerback during training camp. Belichick has cut other safeties upon the conclusion of training camp before their contracts were up, most notably Lawyer Milloy and Dexter Reid. As for Chad Scott, he is in the twilight of his career and Patriots need to retool the linebacker and cornerback positions with youth. As for Randall Gay, he has been unable to stay healthy the past two seasons.
I would be surprised if Wilson is cut, I think Hawkins is more on the bubble than Wilson. If a safety is drafted that will likely be the only new face.
Assuming a Safety gets drafted - Pick 5 or 6 from this group - Harrison, Wilson, Sanders, Hawkins, Andrews, Jones, Mitchell and maybe Baker (RFA)
As maligned as the secondary was for 2006, the were a key part of a defense that allowed a team record 14.6 PPG and only allowed 10 passing TDs (that is an amazing stat).
Cornerbacks - That is a different story, if Samuel leaves the position could be shaky. I see Wilson as only a safety, when Troy Brown is getting snaps at DB it indicates that they prefer Wilson at S.
Scenario 1 - Samuel leaves
RCB
----Starter ??? (Mid level vet, don't know who but someone we don't think very highly of)
---- Depth 1- Chad Scott (NARP)
---- Depth 2 - Gay (injury prone RFA??? not a lock that even make him an offer)
LCB
---- Starter - Hobbs
---- Depth 1 - ??? (Rookie Draft Pick, doubtful that even a round 1 pick would be asked to start)
Scenario 2 - If Samuel is signed, we could add a mid level vet or draft a player in rounds 2-3 and the position would be solid with potential to be very good.