Esteemed writer Jonah Keri posted his predictions today in the most in-depth prediction I've seen so far. Regarding the NL Central:
Yes, the Astros will be bad. Just don’t bet the under. Owner Drayton McLane is one of the most stubborn characters in baseball, refusing to trade stars like Lance Berkman and Roy Oswalt – same as he did with Jeff Bagwell and Craig Biggio – preferring instead to watch their immense talent wither on the vine, and the team fail to build anything decent around them. Perennially one of the worst farm systems in baseball, the Astros could have a long wait before they’re good again, and should prepare for a long string of last-place finishes. Wandy Rodriguez might be the loneliest top fantasy commodity in the game this year.