A few thoughts:
1) If Bohm needs to get better at 3B, why does he play 1B at all right now? Barring a Hoskins injury, hard to see him ever playing there
2) It's time to give LH reliever Jeff Singer a shot at AAA. His Reading numbers - 2.20 ERA, 0.85 WHIP, 11.8K/9 - would sure look good in South Philly, and his is a feel-good story (Philly kid, undrafted free agent) to boot.
3) Unless Wingrove is a butcher in the field and maybe even if he is, time to challenge him with a promotion to Williamsport.
4) Based on the Phillies collection of mediocre fielders who play or profile at corner positions - in the majors (Hoskins, Franco, Harper, Bruce, and including Haseley and McCutchen because they are not CFs) and the minors (Bohm, Listi, J Ortiz, throwing in Wingrove because of his size), the ML team should absolutely be leading the charge to bring the DH to the National League and ASAP.