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Not just from being able to colonize or fill out Planets but also curate your own Faction allegiance and preselect Genetic Modification candidates. I also have taken Indentured Assets with my Criminal Syndicate and having access to the Slave Market as both buyer and seller is good. I usually do Pirate Haven, Smuggler's Port, Criminal Front Office and whatever suits me if the AI gets to 100 Pops.
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Rivalries need your Naval Cap up so you can be at least Inferior. As annoying as it is to have BOs close, I have enough of them to pump up my Naval Cap with Pirate Havens which facilitates a whole lot of everything else.
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