I will say that I have not been very impressed with the new GM, Mozeliak, however the hell you spell it.
He seems to be too conservative. It's not like the Cardinals have, oh I don't know, 7-8 OF's in the majors and minors that could be used as trade bait. Not to mention that they have some decent pitching in the minors as well.
As far as the closer situation, I would give Chris Perez a shot this year to see if he can do it, and yes I know he struggled some when he was up, but he was doing middle relief work, and I think that he was kind of out of his element. I don't see how Perez blowing a lead would be any different that Izzy or Franklin blowing a lead. Plus, other than K-Rod, I don't see a lot coming up on the FA market next year, and it just got potentially thinner with Billy Wagner having an MRI on his elbow tommorrow. If Perez can't cut it, I think the next logical thing is to sign another fourth or fifth starter in the offseason, or get someone that can eat innings- like Livan Hernandez, who appears to be available, and move Todd Wellenmeyer to the closer role. Moving Wainwright to the bullpen doesn't make a lot of sense to me because he is so good as a starter. Wellenmeyer, however can throw in the mid to upper 90's- I've seen him at 97, but he consistently at 94, and facing the lineup once will allow him to let it go. He also has a good slider, and at times a decent changeup.
Beyond that, the Cardinals need another big bat to protect Pujols, perferably a middle infielder. Colby Rasmus does look like he will hit for power, but he has struggled some at AAA, and that certainly is a concern. But, as far as I'm concerned, Kennedy, Izturis, and Miles are basically worthless and have no business starting for a MLB team. They also need to purge Ron Villone, Russ Springer, and Ryan Franklin and of course Izzy. Getting rid of them, and Mulder should free up some cash where they can go get somebody decent.