Build that offensive line. If no o-line then it doesn't matter who the receivers and RBs are, the offense will go nowhere. Sign C Mack, but Oz may not want to do that given possible impact on comp picks, IL Smith (3 YRS w/2 guaranteed), and maybe add WR Smith for 1 yr. Draft a WR, S, and OL and play them to develop. In the end, I trust the Oz - few teams build competitive teams like we do: through the draft.