John Mo has made a quite a few moves since being the GM, but nothing huge. Picked up Cesar Izturis... which is definitely a downgrade from Eckstein. Matt Clement, recovering from surgery, was picked up. I guess they're hoping for another Chris Carpenter story. They brought back Aaron Miles, with I thought was smart because of his versatility.
All-in-all, the Cardinals haven't really made themselves that much better in the offseason. Unless Pujols, Rolen, Duncan, Molina, and Ankiel can all stay healthy and produce like they're capable, Cards will probably miss a second consecutive postseason.
Lets all hope Mo has one more move up his sleeve.