I have no problem with you using it. It's a long way from finished though, so I'd look at it as more of a proof of concept. In fact while I was out doing yard work I was just thinking of a better way to handle the habitable systems to get the results I'm looking for so these files will be "out-dated" by tonight
And yeah, it's always best to work with other people on projects with a big scope. People have a tendency to come up with very different ways of doing the same thing and we're generally not the best at breaking our own creations.
Kewl, lets keep exchanging ideas. Sounds like what you are doing is different and complementary to what I've done so far, though you may not like the re-balancing I've done.