Well, this series got started in a rather unusual way. I sat around and tried to come up with a way I could write both Christian characters and still have "space aliens". It took a little while but I figured out a way that is self-consistent with what I believe the Bible says. But then again...fiction is fiction, right?
I once heard it said that if you really want to make a political point, don't go write a polemic. Go write a novel to really get attention. (Reference Alice in Wonderland)
So this series really seems like a good place to explore some issues...