My main interest is in hacking the underlying graphics. Ok, so just graphical modding I admit. I'd like to be able to pull out the existing models, edit, and reinsert new models. Since the HFS files are container files for standard resources, and of course how to read HFS files is in the client, if you can figure out how to extract the models and textures, I'd be extremely happy. Once a way to pull them out is found, putting new stuff back in should be a snap