I am abandoning the gnome-filer project. I haven't done much with it in a long time, and it really is poorly designed (through no-ones fault but my own).
Instead, I am contributing what I can to Entity. Anyone interested in XML-based interface languages should check this out. This is how Gnome Filer should have been done in the first place-- the XML engine was perfected, then they started adding "renderers," DTDs based on whatever interface you require-- language (Perl, Python, Javascript, etc) or GUI (Gtk+ so far-- Tk is in the works, I've heard).
I always considered Javascript a toy language. Now that I've seen what it can do outside the limited environs of a web browser, I've changed my mind. It's not going to replace Perl anytime soon, but it isn't nearly as terrible as I'd supposed.