So what you're positing is (post LaRoche trade)
2012: Morse 1B, someone-Werth-Harper
2013: Morse 1B, Werth-[Bourn]-Harper
2014: Werth 1B, Hood-[Bourn]-Harper
Actually I'd say the single most beneficial development over 2012 is not Harper being able to start in center - it's Michael Taylor being able to start in center. If we lucked out and that happened, you'd have a stud outfield that would also cost a lot less than Bourn (hellooo, Greinke) and be easily tradeable if even better players come along.