De Aza need not be on the team, and he typifies all the boneheaded play all year. Get rid of him. Hahn needs to find people who know how to play fundamental baseball.
Others I would like to see gone: Viciedo, Keppinger, Gillaspie, Ramirez.
Unfortunately, they are stuck with Dunn, though there would be no stronger message that bad baseball will not be tolerated by just dumping him and eating his contract.