If you don't want them, change your passenger ships to a custom design with just one standard passenger bay and make it very slow with reduced engines, maybe also give it just one fuel tank so it's always out of fuel, and finally give it the slowest warp drive you have. Hmm, I also realized you could give it just one fission reactor so it has no energy, no shield or armor, just the smallest and most tech obsolete design you can have, Then every time one builds, give it away to a pirate gang or another empire LOL>
Lonnie Courtney Clay
that's not what i was trying to say
its just common sense that any person would have, don't migrate somewhere where your very likely to be killed or enslaved.
i would also really like more specific options on the colony policies, not just blanket statements that any race cant come or exterminate all races, but be able to chose a specific race to target for enslavement/extermination and if that race is being treated badly they wont want to come to that empire
it doesn't seem like it would be that hard to code in