Steve,
Something very minor - in your December 30 post re changes in v6.4 ( Mineral Generation ) you stated that the minimum amount of minerals on the Homeworld would be 50,0000 and accessibility 4. In my new 6.4 game Earth has indeed got a mineral accessibility of at least 4 but only 2 of the mineral quantities exceed the 50,000 minimum , the rest range from 29,250 to 47,800.
DavidR
PS Running v6.4 according to the setup screen , when clicking on "About" in the main menu screen the version shows v6.3.