I'm not an operator, so I can only speak to what I observe as someone who frequents arcades. I've noticed that people like to spectate arcade games just as much as play them, and those massive Pac Man LED walls draw in a large amount of spectators who may eventually go to play the game once they watch it once or twice. Would a giant pinball machine do this? I'm not actually sure... How well does Hercules earn for the few places it's still out on location?

I do like the idea of a large multiplayer game--like a head to head game, but with more players. Think: Hungry Hungry Hippos, but a pinball machine. But the drawback to that is in order for it to be fun, it'd *require* multiple players.