I think we should try and sign Greer (from Buf) or Robinson (from Hou) before we go give up a pick and a contract for Rogers (although Rogers is better than both of those guys I mentioned)... what we REALLY should have done is courted DeAngelo Hall hard when he was cut, and at least tried to trade for Fabian Washington, both of whom were much much better after leaving Oakland (quite a trend).
I think signing one of the top tier DB's Sean Jones, Greer, etc., and then drafting one in the top two rounds should take care of our secondary for a while, especially if we can shore up the pass rush (which we should anyways with Adalius coming back, and the young'ns getting better)