That's the problem. They should be willing to move anyone after losing for the 4th season in a row. I would have no problem packaging Santana, Vargas, or Gibson with soon to be ready prospects to get a true impact player. You are right though that they won't which disappoints me.
Atlanta probably has little interest in a DH like Vargas.Santana and Gibson would have some value, but combined they probably couldn't get Miller, which means you'd probably have to use those two and a Berrios or better to get Heyword.For one year. In which they are expected to be bad with or without Heyword.
Santana is young plays the two most premium positions though.I would bet his value leaguewide may actually be more than we expect.