I am designing a pre-Imperium world where the Slaught have arrived in their body-suits as "Gods" to rule.
At first it will appear to the players that these individuals might be a fellow Rogue Trader party which was shipwrecked on the planet.
The players will discover that when the Gods landed, the planet was in the middle of a massive war. The Gods imposed order and discipline on the masses, and brought peace and prosperity by overthrowing the local elites. The players will witness a public execution, where a strange alien beast decapitates the war criminals (elites). This is a Slaught Harvester, and if the players follow its rounds of the city, they discover that it is taking the heads back to a central structure, where the Slaught will consume them.
I am doing more work on this. The Slaught have a warship hidden in a gas giant, and will eventually bring all of their ilk down to the surface once they have totally infiltrated the world. I need to design the Slaught Warship, which is going to be a huge black disk with weapons similar to the hand held weapons they carry.
I am probably going to set this world in the area of the map closest to calixis.
