The only part of Astroball I'm skeptical about now is that a veteran presence matters, i.e. Beltran. They did that analysis and found that chemistry in a diverse locker room can account for six wins. Beltran, in addition to being a whiz in the video room, was a guy that was the glue that brought teammates together.
So, I don't see the value in having say, Adam Jones back around in the locker room when the O's are competing again. He'll also be a grandfather by then anyway.