First off, we have to find a manager. If Davey wants to keep managing, fine. But we need to start thinking about his successor.
Second, dangle Morse to an AL team needing a DH. I love Beast Mode, but healthy is not his strongsuit. Couple that with terrible defense in LF and it may be time to move him. Maybe find a replacement for Jackson. The Red Sox, Rays, A's, Rangers, and Mariners could all be potential trade targets.
Third, open competition at second base between Espinosa, Lombo, and Rendon. This means Rendon needs to move to second NOW. Either that or LF. Third base isn't open until Laroche & Morse are both gone and we can convince Zim that it's better for his shoulder if he moves over there.
Sign BJ Upton to a 4 year deal. Power, stolen bases, good defense. Move him to CF, Harper to RF, Werth to LF. Much better defensively. Offensively, maybe a slight reduction, but not much. The defense would more than make up for the slight drop in offense.
That's about it. If a bullpen arms becomes available, maybe. But I think a lot of our bullpen troubles stemmed from starting pitching not going very deep in to games.