Additional House Rule:
I can agree to that. Perhaps we should expand that to both the League, Church and Ministry worlds. Its not particularly believable that any of the NPC factions would allow House settlers without some sort of payment or open war.
Although judging from what little lore I know the Vau actually seem okay with settlers at least on anything that isn't Shaduveen and the Embassy world. I could be wrong.
House Colonization - Broken down by Fading Suns Lore for NPC Factions:Symbiots: No Restrictions if you can settle, capture, or conquer it is yours
Church: The Church is stricter on some factions more than others,
Holy Terra (Orthodox) no new settlements the noble houses can keep their hereditary homelands, but immigration and acquisition of new lands is heavily regulated by the Patriarch although the Church is open to the Li Halan expanding there because of their close relationship to that house,
Artemus (Amaltheans) also has strict immigration the League has been allowed to mine some rare minerals on that world, but the noble houses are relegated to their hospice estates for their wounded veterans,
Pyre (Avestite Inquisitors) haha no one wants to settle here the Avestites are so Draconian with their religious edicts but like all worlds the League has a presence there,
Pentateuch (Eskatonics) this church faction is more liberal on immigration the Hazat, Hawkwoods, and Obun all have estates here and other factions would be welcome as well, and lastly
De Moley (Brother Battle) this world is just so inhospitable because of its nuclear winter there is almost zero immigration the Decados and Al-Malik have some settlements there but they are more strategic because of the proximity to their homeworlds.
League: The League is the opposite of the Church they have open immigration on most worlds as long as it benefits the Guilds and Commerce.
Leaguehiem has a presence from four of the Noble Houses with the exception of the Li Halan they are banned from owning property on the the world since seizing the planet Rampart from the control of the League,
Bannockburn is controlled by "The Muster" the mercenary guild led by their Guild Leader whose title is the "Janissary" the Hawkwoods have holdings on this world and other houses should be able to establish economic interests there as well, however, civilian ships from Stigmata must be inspected regardless of whose banner they fly to keep Symbiots from getting their spores onto that world, and finally
Madoc there is little immigration here because land is so scarce and it is the home world of the amphibious alien race the Oor'ym the Al-Malik have a chain of plantation islands on this world where human and alien Shantor slaves grow sugar and alien tropical fruits for export, however, a slave revolt on one of the islands by the alien Shantor has impeded production and the Shantor Leader has declared himself King of his island.
Vau: The Vau as usual are an enigma, each of their worlds have a different policy,
Shaduveen thought to be the Vau Homeworld (but is not the Vau control over 40 worlds unknown to humanity) is strictly forbidden to human settlement with the exception of a League Trading outpost,
Vril-Ya the official diplomatic world to humanity forbids immigration to anywhere else on the planet except for the designated island that humans can establish residence to interact with the Vau Hegemony, however one sided those negotiations are since the Vau rarely respond to any human requests,
Manitou is a Sanctuary World but only in the Western Hemisphere, outcasts from the Known Worlds such as outlaws and those persecuted by the Church may settle here, the Vau control the Eastern Hemisphere, and lastly there is
Apshai humans are free to settle the Northern Hemisphre but are completely forbidden to settle the Southern Hemisphere where the indigenous G'Nesh live are are under the protection of the Vau Hegemony
Imperial Worlds: Byzantium Secundus is already overpopulated and the Regency strictly prohibits any new construction on this world, all Houses, the Church, and the League has economic interests on this world especially the Hazat and Decados that control the major space vehicle manufacturing shipyards, and the Minor Noble House Cameton the rulers of this world (in name only) function more as administrative overseers for the Regency's economic interests on this world,
Tethys called the "Armory of the Empire" is the home of the bulk of the industrial base for the Imperial Fleet, this world is completely open to immigration since the Regency seeks to attract the best skilled workers to this world to aid in the maintenance and construction of Imperial Weapons, all Houses, the Church, and League have a presence on this world,
Stigmata Garrison this world is under strict quarantine and humans coming and going are subjected to intensive body cavity searches lest a Symbiot spore makes its way into the Known Worlds to wreak havoc on an unprepared population settlement of this world will only come once the Symbiot infestation is eradicated, and lastly
Nowhere this world was lost to humanity for centuries and once the jumpcodes were established the Imperial Fleet expected to find a lush thriving world that was described in the historical Imperial records but instead found a desolate inhospitable world that suffered some calamity a planet that once was the home of millions now only had a few thousand humans remaining mostly living a nomadic existence, and the planet was infested with Husks (Zombies) the Regency has decided that this world will be soley under the jurisdiction of the Ministries, the Imperial Fleet and Imperial Eye have established outposts on this world, and visitors throughout the Known Worlds come to visit the Gargoyle of Nowhere a huge ancient Gargoyle that grants those who touch it with a glimpse of their future
Independent Worlds: In the Emperor Wars Mod there is just one and that is
Grail controlled by the Minor House Keddah and is home to the alien Avian Race the Etyri, this world has managed to keep their independence but one of the ambitious leaders of the Five Major Houses can possibly bring them to their knees and claim the world as their own the Hazat and Li Halan both have their eyes on conquering this world.