Thanks for explaining these canons; this is fascinating stuff! I started to meta about how the "SG-1" designation shouldn't be retired, that new members should be brought in as old members leave or die, and then realised that Team Atlantis fits the line marriage model even more so than SG-1.

Le Guin has been on my To Read list for years and years, and now I want to actually pick a book and start. Maybe Left Hand of Darkness?