That should be too hard. I mean all you have to do is send them your copy and they'll give you an access code you can use to download that game from PSN. It might take a while but it's definitely doable.

This interest me. What if games release on the store before on disc? I see it likely only because of the time consumption involved with manufacturing as opposed to simply setting up the download on the PSN severs. Games could feasibly come out 4 to 6 weeks earlier than their disc-based counter-parts if sony allows them to...