Frasier is hitting closer to his projected wRC+ than the 135 wRC+ he had at the time of the trade. Overall Preller has put no one on his team in a place to succeed because he has zero options behind them...or he has no clue how to make his players more successful. Hosmer sitting against pitchers that can beat him with Sinker's or LHP on the mound would have probably brought some value from him. The only option in the entire organization that can play in the majors and play 1B are Wil Myers and Jake (they were needed elsewhere, although playing Jake at 1B and Kim at 2B would have probably netted similar results as playing Hosmer everyday). The options for depth in the OF were Jorge Mateo, Brian O'Grady and Tupacita Marcano. They were actually lucky to get a mostly full season out of Tommy Pham.
If the pitching injuries were the reason that they were losing games I'd be like "tough luck". For the most part they have managed their way through that though. Even if they say goodbye to every free agent and pick up none of the options they have for next year (Profar, Stammen, Melancon, Johnson and Marisnick)...they still have 41 players on the 40 man and $142M committed. They are at 2015 Blue Jays stage where this off season they may as well move the remaining young assets and try and piece it together.