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A good reason I hope we're still in on Oswalt.
If everything plays right, we're looking at at a lot of positions producing ~5 WAR: C, 2B, CF; and maybe 1B, LF (Wells/Carp judicious semi platoon) and RF (fully resurgent Ichiro... less likely). Throw in a few WAR at SS and figure RL at 3B at least and you have a pretty nice, even sweet, contribution from the position players. But as pointed out above, you don't even need everything to be that rosy to compete.
Unfortunately, it sounds like a quite a few teams are interested in Roy. It would be nice to have two kings (Felix and "Roy"). Kinda like Sparta!