It is nice to have a DH play a majority of games if he is a big bat. Like other players, he needs to play and see pitches to be effective. When he needs a day off, that is when someone else is slotted as the DH and gets the "half day" game. I said at the time that releasing Ortiz was a big mistake. A few Red Sox World Series wins later, a future Hall of Fame nomination to come, and the breaking the Curse of the Bambino makes this move one of the worst in Major League Baseball history. A couple seasons ago, I wanted the Twins to push hard to sign Nelson Cruz for DH duty. Two seasons of 40 home runs and a good average in Seattle show that would have been a good move. If Mauer showed power, he would be a good fit for DH. That is moot because he only showed power that one contract year. If the DH is not good enough to be a solid 1st through 5th bat, you need another DH.