I do like that we have at least 6 viable SP candidates on the roster now. The Estrada and Chavez moves aren't great value by any stretch of the imagination, but they were almost necessary given the wasteland that we had entering free agency. Remember, we gave 10 different guys at least 3 starts in a relatively injury free 2015.
That's not to say that the rotation shouldn't improve, but LaCava has acquired enough depth to put us in a much stronger position.