If they keep Ciriaco to play utility IF, they could swap out Valencia for Punto. He will get 0 playing time behind WMB, so it doesn't make a lot of sense. We have much bigger needs than backup at 3B.
Because they think that outs at the end of the game can be gotten by any pitcher. They decided to change the entire back of a bullpen that had been very successful. It has worked out very badly.