They have experience at QB, a better offensive line, an NFL caliber RB...with a very capable backup. Also, Odom is a great defensive mind and the LBs and DBs look like they're going to be better than last year.
Mizzou is weak at WR...and DL isn't looking that great...but I wouldn't count out guys like Josh Augusta, Rickey Hatley, and Ted Beckner. Pinkel knows how to develop his players. It's next man up. I think that Missouri really only has 3 "tough" games on the schedule (Georgia, Tennessee, and Arkansas). At a minimum, I think that they'll go 9-3.