And hasn't it worked?
Klentak got about as much value as he could out of most players, some bad luck.
Even Hellickson was a wash, the one good deal fell through, and there were no rumors of other significant offers, he got a half year out of him (protecting young arms, we still had to rush Pivetta, Thompson and Eflin) and still obtained some value in trade.
Hernandez, Galvis and Rupp have improved their value significantly over this season.
(Though at this point I doubt they trade Rupp since Alfaro is no lock to hit ML pitching).
Joseph has flatlined, but nothing from nothing is still nothing, he never had that much value to begin with, only a hot finish can create value.
Everyone else of value has been traded except Nava and Blanco, and I doubt there's a market for Blanco.
In the pen, the only tradeable assets are Garcia and Neris, and there are few alternatives - with a young starting staff, we really can't afford to strip the bullpen.