I assume Vaughn is around for next season, and you wait for performance or injuries to let whatever combination of Burke, Fischer (or other corner bats) to force the issue a bit. Which I'm OK with if contact with Fischer wasn't a wild card I'd be thinking more about bringing him up right away and trying to snag the ROY, but give the vets some more time while you wait for the rookies gives us both plenty of upside and gives us that depth. I imagine a similar philosophy on the other side of the infield. The combinations of performance, salary and options gives the team a lot of flexibility to make moves when players are ready instead of being forced into decisions.