Darkness stirs on the rim. Survive flesh infestations, cultist attacks, shambling undead, blood rains, invisible hunters, and other sanity-shredding perils. Capture and study entities to harness the power of the void. Conduct psychic rituals and awaken an evil machine god.
This is going to unlock so many new war crimes.
Also I like the idea of infecting a prisoner with essentially The Thing and then just sending them back to their home base to chill lol.