I think I would platoon Bixler and Ankiel...which Davey is now doing. Nobody out there looks like Curtis Granderson. There just aren't many CFs around, and not many disciplined leadoff hitters either.
Across the team, if either Desmond or Espinosa hit .285, the Nats would be much stronger. The Nats have a boat anchor in the middle of the lineup: Ramos (.250), Desmond & Espinosa (.230), Ankiel (settling toward .235) & Bixler (improving toward .235).