Cron and either Calhoun or Green for Ian Kennedy and Huston Street? Not saying I would (or that the Padres would), but I think it would be a trade that would help both teams quite a bit (Angels short term, Padres long term).
Angels' bullpen would get a great piece, and the rotation would become a lot deeper. Leftfield could be played by Green or Calhoun (whichever one isn't traded), and DH by the Cowgill/Navarro or even Ianetta.
I like what I see from Cron, but I'd have to at least consider a deal like this.