Well, wasn't AA signed to a 5-year contract? If you analyze where they were prior to the trades, the organization needed this year to overcome the injuries to the starting rotation and also another year of development for guys like Syndergaard, Sanchez and Nicolino to possibly reach AA. Also for emerging guys like Nolin and the just drafted Stroman to reach AAA. In terms of position players, D'Arnaud needed probably half a season at AAA and Gose turns out needed the whole year there. The organization would've been better served to wait another year and then it would've been primed to make a push with talent reaching MLB and more talent at AAA & AA for depth or to trade and acquire established major leaguers since the values of guys like Nolin, Stroman, Syndergaard, Sanchez and Nicolino would be much higher being in the upper minors.
Anyway, just saying that it seems to me that Beeston/Rogers didn't want to go through another rebuilding year given the disastrous 2nd half in 2012 and instead of risking striking out on FA, they overpaid with their farm system to make sure they got players.