Best idea is to try to emulate Duke. They play in an old 9K seat arena. If they didn't have Coach K and the basketball history they do, they could have been a Creighton, Butler or whomever. Coaching, history and support for the programs make them what they are.
As far as Creighton goes, being in Nebraska is fine. They have a fervent fan base, grest support for heir program and now will be able to bring in even better talent in a better conference. I too like schools like VCU, but I totally understand if the new Big East wants to only include private schools and not publics as there is a difference in how they are run.
I think the eastern schools will need one more "eastern" school to make split divisions though if we go to 12 teams. Guessing that might be a school like Richmond, but not sure.