Could FIRST be dealing with a space issue on the dome floor? Based on these pictures Atlanta has more of an oval shape compared to Edward's rectangle which looks like an issue when trying to have 6 fields operating independantly.
St. Louis:
http://t1.gstatic.com/images?q=tbn:A...E4imN92VYY&t=1
Atlanta:
http://4.bp.blogspot.com/_x2NwiFwMad...orgia+Dome.jpg
Just some thoughts to be considering with a new event/arena.