As much as I do want Lee and would like to see the C's get some more depth, we're not in terrible shape at the 2 spot as we're currently constituted.
Going into the season we're a little weak because Bradley is out; however, we could probably get by with a combination of Terry, Pierce, and either young of the young guys (Moore or Chistmas) or less desired free agent option (McGrady or Dooling).
Once Bradley gets back, this need for another 2 largely diminishes. Bradley will at least play 28 mpg once he's healthy (and at his age, there's really no reason not to play him more). Given that Rondo's a lock to play at least 36 mpg, Doc is going to have to play Terry at the 2 for some portion of the game if he wants to get Terry more than 12 mpg (and let's be honest, Doc will probably play Rondo north of 36 mpg many games).
Thus, with a healthy team, we're really looking at 12 minutes or less per game at the 2 spot once Bradley is back. And given Doc's desire to utilize Green, I wouldn't be surprised if Pierce gets some run at the 2 here and there to free up some 3 minutes for Green.
So, in short, would Courtney Lee be nice for depth, especially on an older team? Absolutely. I'd love to have him. But when this team is at full strength, we're not in as bad of shape as some people might think.