The main task at the moment is modifying the serialization of the maps so that it is consistent with the maps created by the map builder. Mostly it involves getting rid of some hard-coded nastiness. It should also make the system a little more flexible... who knows?! It might even become a useful little game engine ;-)))
On the artistic front, it'd be nice to hook up with someone who's interested in helping out with all facets of 2D art stuff. At the moment, I need help with the UI, textures, and animations. Let me know if you're interested in teaming up.