I continue to believe that Revere belongs in center field, because of his amazing range, and because he is more fun to watch in center than Span. This is a crappy season anyway, so why not at least let the fans enjoy more Revere webgems.
Revere is so fast that he could shade towards left field to provide some support for Willingham, and Span could play right field and shade a bit towards center. It seems to me that such configuration would make for a superior defense that would be fun to watch.