We need two WR's unless someone thinks that we can count on Aiken as a deep threat. Moss is signed through 2010 and shouldn't be counted on past then. Even with Moss and Welker, we need a third to stretch the field, with Welker in the slot. And we need a developmental wide receiver for the future. In the meantime, even with a solid #3, we are counting on Aiken to play major reps if there is an injury.
And yes, I know we count on our running backs and tight ends in the passing game. We still need to have wide receivers. My preference is for two free agents. But then, my preference is always for free agents to allow us more freedom in who we choose the draft. It is always good to have the luxury of being able to draft developmental players.