It looks like something similar to this concept is possible with Poser. I hear that there is a new plug-in for Carrara which allows you to import a Poser model to a Carrara scene. THEN, if you repose the model in Poser, the figure in the Carrara scene is automatically updated! It would be wonderful if you could do that in Bryce. Even better if the updates still worked even after you had textured the figure in Bryce.