Seeing how next years rally is in Zone 2, (the nation being divided into 4 zones, and the schedule going 4,2,3,1. 1 being the other side of the Rockies, I'm guessing), I'd like to put forth the suggestion that the 2013 Rally be held in Louisville, Ky and the Kentucky Fair and Exposition Center.
The National Farm Machinery show is held there every year, so there'd be more than enough room for all the vendors to be inside. Plus, there's an indoor arena that hosts Monster Truck and SuperCross events, so maybe the opportunity to have the GS Giant course INSIDE!!
Lots of green space for campers as well as close by hotels.
Anyway, just an idea.
Thanks for your time,