Yeah, St. Louis and Omaha (if the SLU / Creighton rumors are true) are west of the Mississippi, but it's not a silly as having Boise, Idaho or San Diego, California in the Big East, for crying out loud.
(then again, some people were advocating they invite Gonzaga).
If they add:
Xavier (Cincy) and
DePaul (Chicago) and
That looks OK, but at some point Dayton and Xavier will complain if they go to 12 by adding SLU and Creighton and split Dayton and Cincy into separate divisions.
Neither of them are going to want to go to the eastern division, so you MIGHT see them invite only ONE of SLU or Creighton + an eastern school.
they will have to come up wiht a scheduling gimmick to let Dayton and Xavier play each other home-and-awy every year.
In cases that happens, and assuming that the new Big East goes upto 12 teams, and splits into 2 divisions, but adding possibly Richmond and VCU to make it 14, it'll be possible for Dayton and Xavier to possibly compete within a same division.
Should it be 2014-15, the division format would consist into the following:
East Division: Providence, Seton Hall, St. John's, Villanova, Georgetown and Dayton
West Division: DePaul, Marquette, St. Louis, Creighton, Butler and Xavier
Should it be 2014-15 (or beyond), with VCU and Richmond (or 2 other northeastern private/Catholic schools), the division format would consist into the following:
East Division: Providence, Seton Hall, St. John's, Villanova, Georgetown, Richmond and VCU (or 2 other northeastern private/Catholic schools)
West Division: DePaul, Marquette, St. Louis, Creighton, Butler, Xavier and Dayton