Ruthless - great perspective.
Ovi - if you replace Wallace, that is a pick that you aren't spending on the defense. Every additional need created is one that needs to be filled. Moreover, WRs generally do not contribute significantly as rookies. Even the good ones, it often takes a few years. I'm you somehow attribute that to DL, but that is pretty consistently the case throughout the league.
I don't want to overpay Wallace, but if he walks for nothing, it hurts the team. In no way is it a benefit.