Race only acess.
All have Own Islands & govern selves.
Only contact with others is via
Immigration IE New colonists
Emergency needs or disaster in area of said Islands
Otherwise each Island unto itself.
Each Island decorates ext etc for its population
Has own rules.
They have to fund to build Island/s for specific group
Then occupy said Island/s.
In effect gays fund for thier Gay Island colony or have toset up arrangement with Main colonies in area.
Islands should allow non members to Island for
fuel, stores for other Islands for disaster needs only
unless have provisions for guests & tourisim.