I think I am happy now with the combat and the diplomacy. There was a lot of NPR vs NPR combat (as seen in the videos) with no apparent bugs. It isn't perfect, but good enough to release and then tweak. Tomorrow, I will start a new game in the installed version and run the first year or two just to make sure everything functions as expected. This won't a full campaign - I just need to make the installation with obfuscation doesn't have any problems that don't appear in the debug version.
I'm not going to spend time on updating the AAR for Space 1889 - I'll jump straight into the new campaign.