In the particular scene I'm working in, I use a big bar prop. I think by adding characters, I'm pushing, like you say, the "poser universe.". What I often have to do is take a scene and save it as a background, making it easier for Poser to perform. Lots of times, Poser will "get tired," and " not listen." Like I'll try to make a character's shoulder move forward, but can't get it away from another character, or lighting.