>In a number of interviews, the production staff and director >have made plenty of comments to the effect of, "there's no >real meaning to it. we wanted to put in some crazy but deep >looking stuff to pad out the background and the Kaballah had >everything we were looking for".
Since the Japanese population is probably under 2% Christian (or something like that), I can imagine all of the symbolism they borrowed being viewed as "mythology" in their eyes and the viewer's.
But yeah like I said, to me the series is all about characterization with everything else (including the plot) of secondary nature.