Right... but what would be the difference between a normal midwest or south show and a regional... all the corps would be the same. Basically any non eastcoast show is already a regional because there are so few shows.
Take a look at what corps would be at these so called regionals:
South: Gold, CV, Sun Devils, Alliance
Midwest: MBI, Chops, Govies, Kilties, CT, High Country, *Lakeshoremen
Yes, those are some dang good corps BUT... the only real "ringer" in there for the Midwest is MBI and the only one in the south is CV.
People will show up anyway to see them but imagine if Cabs or Bucs made a trip there... I bet more people would be interested in going. I bet you anything that people skip one show to go to one the next week because thats the show MBI is taking a trip to.
Is there a huge benefit to the east corps? Not really, but it would be good for every corps at that show and would promote DCA a bit more in those regions, showing it really is a national circuit.
(no disrespect to any corps, just using facts that the top Open corps bring in bigger crowds)