We've had similar discussions about moving players positionally before. Here's an actual real-world situation!

A little over a week ago, I suggeted that the Angels should change their outfield alignment by promoting Peter Bourjos and giving him playing time that was being allotted to Juan Rivera and Bobby Abreu (who could then both take DH time away from Hideki Matsui). By using Bourjos over the slow and aged, the argument was that they would get a significant improvement in their outfield defense and a peek at their future, as they’re staring at a pretty sizeable gap between themselves and the Texas Rangers.
Read the whole thing, it's interesting!