Just a hunch, but Ortiz will be the regular DH. He'll hit 90 HR, knock in 250 RBI, and hit .340, and will finish 2nd to a position player in the MVP.
Just kidding...or am I? The REAL American League MVP, David Ortiz, will be the DH, with the occasional spell from Wily Mo Pena, or Manny Ramirez (with Wily Mo in LF, so it will be like Pena is subbing for Ortiz). I think David will hit 45 HR, knock in 140, and hit .300. I also think he'll once again be shafted by the MVP voters.