Two things:
1. It makes perfect sense to use late 1's on draft-and-stash candidates. Much more sense than using 2nd rounders for the same purpose. I think Mr. Body and ploto have made that abundantly clear; but I also think it's readily apparent to anyone who stops to think about the issue for even one moment.
2. I don't get the idea that the Spurs were going to draft a difference-making player at 28 or 33. You get lucky every so often and land a Parker, a Barbosa, a Howard, an Arenas, or a Boozer or something like that. But more frequently, at those spots you end up with an Udrih, a au, a Kleiza; players like Wayne Simien, David Harrison, Ndudi Ebi, Frank Williams, Chris Jeffries, Brandon Armstrong, or Erick Barkley.
If the Spurs are truly going to get better in a meaningful way for 2007-08, their best bet to do so is through free agency. Given their cap commitments for next season, their best chance to improve through free agency is with a sign-and-trade. And now the Spurs have some pieces that they can include in such a deal without gutting their existing roster to get it done.