And it involves bringing your friends together. Say you wanted a dragon avatar - but you can only use the limbs on your avatar to rig the head, neck, legs etc leaving the wings and tail with no bendyness. Well, what if you made that avatar in seperate bits so one person's limbs could occupy the main body of the dragon while another person serves as the rigged wings and tail! It would be like one of those horse costumes where one person the front end and another's the rear end.