Last PAX East I noticed by the end of the day many of the gym leaders were pretty worn out from battling. I know some of them were fed up with battling after only a few hours by Saturday. Perhaps if there were more than 8 gym leaders, but only some were required to wear the scarf and battle certain times during each day,that way no one would get worn out, everyone gets to see what they want at PAX, and people would be able to find gym leaders more easily if there were more than 8 going on and off the clock.
Certainly in Pokemon there were more than 8 gym leaders in each region, (NSFW: http://chzmemeafterdark.files.wordpress ... ng-oak.jpg ) and with carefully organized rotations (ugh, this sounds like brown nosing, but i could help plan it, I'm good at that stuff) there could even be repeats of gym leaders or rivals, simply being on and off the clock at different times. If the gym leaders wrote down times that they wanted to play, and when they wanted to see the booths, time schedules could be pretty easily arranged, and if the cell phone question on the application is any indication, texting when its their time to play would be easy too.
Just an idea!