I'm not going to come down on Phoenix too hard here. They moved an improving SF and ultimately pretty mediocre center for an all-star center who is younger and also, still improving. Yes, rebounding is a concern in the frontcourt, yes they no longer have a starting quality 3, but they still have assets and are one move away from having a better starting 5.
Overall decrease in talent for Phoenix, but Lopez is playing pretty well right now, especially on the offensive end.