I'll check in with some thoughts on newbie Chris Barnwell and the bizarre 5th starter platoon tomorrow. In the meantime, I'll send you to other places to see what I've written about other things.
I've got a new Prospectus Notebook up on the travails of the Brewers bullpen:
And I wrote a more general interest story, called "Arms to the Rescue", about several teams (the Brewers among them) who may soon get an infusion of talent when a solid starter comes back from injury. In addition to Ben Sheets, I talk about A.J. Burnett, Rich Harden, Randy Wolf, Adam Eaton, Mark Prior, and (even though he doesn't exactly fit) Roger Clemens.