How can I kick out spaceport functions completely ?

[Thane of Cawdor]

Well, would be nice if someone could tell me:

I want to make a MOD in which you colonize a planet, but not like in the normal gameplay
you just have the ressources on it you produce and store on it or bring to it with a transport.
There are no more any spaceports, each planet has to be managed on its very own.
To realize all this you will have lets say 10 times more space on planets and I would like to add "Livingspacefacilities", so you can have enough population to work in your facilities.
Now I need to know, how I can manage to kick out the spaceportsystem of SE4 completely. I already kicked out the spaceportfacility, but I did not yet manage to kick out the ressourcesharing in a system.
Perhaps I could create absolutely invisible ships of a non-interacting race, which orbit every planet and blockade it and then just kick out the blockaded-sign

So I would be glad if someone could help me with that. You then may also ask for some other additional changes