Thanks, Geoschmo.
I will create the empty file for each Neutral.
About the HomeWorld facilities, I'm using Proportions, so they start packed whith those multifunctional Cultural Centers.
I'm adding a tiny-fighter and a tiny-troop with no tech requirements, which together with the infantry units and small weapon platforms should make the Neutral homeworlds a memorable land battle.
Basicly, their Homeworlds will be defendable, but their system will not, because they are going to have only escorts and scouts to fight in space.
The goal I had in mind was to make them look like a mid-21st century Earth.