Mizzou very well could repeat in the SECE. I see USC being very up and down this year, probably an upset win and an upset loss in the works. Don't see them losing to Vandy, but at KY could be a trap game. For whatever reason auburn has always given Spurrier fits, will be tough to win there. Don't be surprised to see USC beat Mizzou at home then lose to auburn and either KY or UF on the road.
SECW has probably widened the gap this year, Bama, auburn, LSU, and TAM would all be frontrunners in SECE right now as all 4 appear to be playing better than UGA, USC, and Mizzou.