That ballroom game must have been great.
The biggest game I ever played was a 1:1 ratio (figure and ground scale) skirmish game between platoons played out of doors in a forest. Combat resolution was by sensors and lasers. Most of the figures were multi-posable, and each weighed a couple of hundred pounds and about 2m in height, all with the very realistic and accurate kit depicted, so much too big for any table and each was capable of limited self-movement when out of command (but rarely did so.) We had real friction even getting some of the figures to receive their orders when out of direct sight of the player who was platoon leader, noise and fog of war being what it was in the game.