As I have said throughout this thread any PCM should come with a high cost, high risk, and a way to block the colonization mechanics. I like the idea that colonization be handed out as a Squadron size mission as welll as the distance of colonization be determined by a new stat “Net Worth “ that is determined by all of all the assets the minor faction controls.
Anything that is truly meaningful comes with challenges the gameplay mechanics I am suggesting will be and should be challenging but that is what will make it more rewarding and meaningful.
None of that addresses concerns over having player's and group's hands in the cookie jar. It's a series of platitudes. Fundamentally the BGS needs insulation from the players. Once players/groups can plunk portions of the BGS down in random places, you offer advantages to those in large groups over individuals and small groups. It pushes the BGS from the overall backbone of the galaxy's economy, into the forefront of group competition. That is what PP is for.
That idea of a 'Net Worth' stat is just a euphemism for 'most members'. Your definition of meaningful comes off a bit self serving. I see another layer to the BGS as just as challenging, as random player chosen positioning and cult head counts.
Find away to accept the BGS as the boss, and I will talk, but trying to get the keys to the castle is going to be a problem for me.