Is Iupati rated as highly as Alan Faneca was when we drafted him in the first? If not, I don't see the Steelers taking a guard in the first round. I just don't see an OG being a 1st round selection particularly since they took Urbik in the 2nd last year.
Spiller would probably be the choice if he's available I just don't see them passing on the value if he's there (I'm hoping he's off the board by the time we pick...c'mon Al Davis).
I certainly wouldn't eliminate the 2nd best (or, potentially the best) ILB in the draft because they signed Foote and have Fox and Farrior. Fox hasn't proven to be a starter that's how we picked him up, Farrior and Foote only have a year or two left and that's questionable. I like ILB at this spot if one they really like is available.
Thomas, still brings the best value and versatility that the Steelers covet. If he's there it would be surprising if they passed on him, IMO.