In my opinion, they would be looking at Smith at FS. He's not even close to being in Jenkins' or Scandricks's league at CB, imvso. Mike Jenkins was an undisputed top tier CB and carried a top 15 grade from Dallas. Terence Newman is going to keep playing at a very high level as long he can stay healthy. He's the leader. There is no expiration date on Terence Newman.
Smith has long legs and is slow in and out of his breaks. He's a bit raw, and if he's going to play CB in the NFL, he's going to have to play for a team like Oakland or Green Bay. Smith isn't going to do well playing off or in zone. He's going to have to press. Plus, he's going to have to get stronger to play more physical in the NFL.
I think he's a bit overrated as a CB, and he says he doesn't want to play FS. Also, I've read where he has some maturity issues. I don't know if it's true or not.
The team Smith goes to will affect his bust potential, imo.
I'd rather have Delmas or McBath than trade up for a guy who doesn't want to play FS.