What would also be nice for a NASHVILLE bid, is that it has so much else to do. A real "Full Family Vacation" could be formed around a DCA Championship. Also I think Vanderbilt Univ is there. (Big Stadium) Tenn. Titans(NFL Big Stadium). Lots of Hotels. The Big Country Music scene, on and on. Alot of things going on even for those in the family that might not want to go to ALL the DCA events. There are also, Both DCI and DCA groups in the area. Not to mention Drum Corps people from the South (A very Growing area), that might be willing to drive some (from GA, NC, KY, FL, AL) to Nashville as opposed to a Cleveland, Toledo, Charlotte, Memphis or back to Scranton, Pittsburh, Allentown, Rochester.
BUT. It still takes someone willing to take a BIG CHANCE, with a lot of money, to make a BID. I do hope that this moving every 2 years is GOOD for DCA. That more place's get to have the oppertunity to host it in our "DCA World".
If not Vandy, you also have Tennessee State (more likely as FCS schools typically get an away game that first weekend of the season). Or, both schools put a bid together that in case they've alternating years of stadium availability, you can go between both campuses. (Though, TSU has a more open campus than Vandy from when I've wandered around both).