Definitely a better user interface for the library, file-manager style, with the possibility to move the files and create directories from inside poser to reorgainze it better. Then a renderer with radiosity, or at least a more 'complete' ray tracer (ever tried to reflect a ray of volumetric light? It just does not appear in the mirror surface), and the refraction node suffers some serious limits now... Last... better documentation in the box ;)