Braveheart Theme -
The band would be divided in half starting on each end zone like apposing armies. Each side would be wearing colors over their show uniform for their side (this can be easily ripped off and used as a flag to wave) Percussion on each side would lead the armies into the middle, color guard waving banners. They rush at each other into the middle where they rip off their opposing colors. And we could use the prop frames to make artificial fire with fabric and blowers.
Asian Theme
Turn current props into 3D Chinese lanterns. Colorguard would puppeteer chinese dragon and tiger. Drumline and pit could do japanese taiko drums.