I'm actually a little disappointed you took the opposing modifiers out. (*clapping* "BOOOOO!") There's room for comedy there, like if the crowd gets into a fistfight and takes each other out if the player triggers a reaction three times that competition or something. With each reaction louder than the last, until a dustball brawl happens, and the player character's all confused (but gets +1 Gain to the muscle in question somehow).