A little more progress to report, I think:
The New Holland system is now starting to fill up. The Geronimo has been replaced with the Devore, which guards SB12; the Khitomer now defends the Devore, we have a transport ship which uses a modified AI I've created (still some issues there), as well as 3 shuttles (one is a weapons pod Danube runabout) which fly from the planet to the Starbase.
Still might add one more capitol ship (maybe the San Fransico to dock at SB12), reduce the size of the windows on the dome, and package it all up ready for beta testing. I might make the custom New Holland system a BCMod so it can be installed and uninstalled easily.
As soon as the ToDos are done, I will open a few beta test positions.