[Husker] what happened to the Cotton Bowl?

[gscratch1 at comcast.net]

>The 5th BCS game may be a new bowl game rather than contracted to an
> existing bowl game.  
> (I suspect the Cotton Bowl folks aren't happy with that possibility, they got 
> snubbed the last time around too.)

just an idle (and innocent) question: why isn't the Cotton Bowl a major bowl?  When I lived in Houton many years ago, the impression I got was that the actual Cotton Bowl stadium was too old / too small.  If so, why note move the Cotton Bowl (game) moved to the Cowboys' field ?  Didn't the Sugar Bowl move to the Superdome?  besides, don't OU and TU still play in the actual Cotton Bowl stadium?

Glen
ps - please feel free to delete if this is not sufficiently Husker-related.