^bandwidth usage would be quite high.  in order to implement that you would need to be using compression - most of the Poser formats we use (scenes, cr2s, tiffs, etc) can often compress to about 10% their original size.  youd also run into issues where the host would require all of the content that you are rendering - which in some cases can be really obscure, sometimes unavailable content. either that or risk violating EULAs by transmitting the files to an offsite server.