DE is a need. We have a bunch of names at DE, thats it. I agree that Smith was impressive in the absence of Berry but he's not the answer. Chike is getting old and Berry has proved to be injury prone. Also, both are aging and will be done soon (at least with the cards).
If Thomas is gone at #5, drafting a freak of nature like Jamaal Anderson or Gaines Adams would be a very good pick. Our pressure on the QB was awful most of last year and one of those 2 would change that.
Trading out of the 5th pick isn't a bad idea (only if Thomas is gone) but don't do it to get a DB. There are no standout DB's in this draft IMO and we can get a very good one in the 2nd. However, trading out of the 5th to get a guy like Nelson or Timmons would be a good idea but only if we got a 2nd to go with it. Lots of time left but I'd be very happy with either Anderson or Adams (Anderson more upside)