Yes, in the discussion I had with Idgit earlier in this thread, I said that the value to the 2013 team of making great picks in 2009 and earlier is not zero; however, it is very low as compared to the value of the picks still on their original rookie contracts.
There is some value in re-signing players before their original rookie contract expires; however, there is risk involved. It's rare to get a really significant discount when signing a player to a 2nd contract. Even if the team does get them signed for a discount, most teams don't like to drastically underpay star performers. It's the reason that Jerry gave Ratliff a 3rd contract.
Back to the risk issue, in order to get any discount the team needs to re-sign the player in his 3rd year or early in his 4th season. Thet re-signed Sean Lee to a contract that is a few million less over 7 years than the contract that Patrick Willis received in SF; however, Lee has never proven to be able to stay healthy. It's a significant risk for the team. Based on his injury history, it's doubtful that Lee would have received a bigger contract than Willis if both were Free Agents.