Hmm. Looks like I need to get Blender figured out enough to give one of those shells a whirl soon. Very nice work.
Out of curiosity, from the pic 'zones' 2/3/4 appear to have different themes. For example, Zone 4 appears to be more nature-bound. I could just be imagining all that of course, but if they do have some types of themes it'd be good to note during the signup process.
--TSK