I don't see how they can avoid picking up 1-2 free agents, OG and DT. We obviously need more blocking help, and we desperately need another run stuffer.
Having two DTs that are studs seems like it is almost more important and harder to find than a good DE/pass-rusher). But those guys are there in every draft. The Williams wall was the last time they have had such a luxury. In the modern game that middle push consistently really gets opposing offenses uncomfortable.