That is how the Yankees organized themselves to win the 2009 World Series. Johnny Damon and Hideki Matsui were both good hitters, but both were 35. Matsui's legs began to go. Whoever was tired or limping got shifted to DH. Poor old Cruz is a counter-example, a reason not to sign a big, slow guy who cannot play the field.
I completely changed my opinion on the DH once I saw what the Yankees were doing (for quite a long time) with the DH position. It should be used as a rotation point to give fielders a break.
