The Vernon Wells deal was precipitated by the fact that Tony Reagins called AA for Wells. At that point, it was a no brainer to unload Wells' contract onto the Angels. The major problem with AA was it that he was awful at rounding out rosters and his teams' depth were poor, so when injuries hit, those teams were particularly vulnerable. Plus, he still had trouble looking at advanced analytics and thought that signing guys like Cordero, Vizquel and De Rosa were good ideas because of the vetrin presents.
AA deserves credit for what he's good at; and that's being thorough, that's why opportune deals for Donaldson, Rasmus and Morrow happened. Donaldson basically saved his tenure from becoming a total bust and leaving at the end of 2015 as a joke, instead of revered (?). And I've said this before, but it's not the prospects themselves that he traded away which is a problem, it's the poor use of the prospect capital. There were better players to trade said prospects to maintain a younger core instead of trading for old, expensive contracts that any idiot could've overpaid for on the free agent market.