I think the strongest argument against retaining Miller is his health and stuff. He's clearly not the same guy he was with Houston. I really worry that his drop in velocity and recent shoulder surgery are not good omens for his near future. I have more faith in some one like Marshall than Miller. It's my personal preference, but I'd rather not see Wade Miller, Kerry Wood, and Mark Prior getting cumulatively paid more than $10m to build pillow forts in the clubhouse for the entire season. At least guys like Marshall, Guzman, and Ryu are getting paid the major league minimum.