Ummm I am not sure about this but I think the buydebug objects for the crowds don't actually spawn the townies they spawn something more like the shadow of sims... the actual sims that watch your performance are right in front of the stage and you can scroll over them/read their name, etc. So you could actually build a performance venue without the buydebug crowd it would just look kinda lame, like the clubs in BP with noone...