Hey all,
I'm GMing a Dark heresy campaign set in the Ultima Segmentum, and I was planning on having a small warband of Chaos Space Marines show up and get involved in the plot. Originally I was planning on having them be Black Legion, but seeing as the Eye of Terror is in the Segmentum Obscurus then it would make more sense to use a group of Red Corsairs from the Maelstrom, which is in the same segmentum? If so, I could then position the campaign roughly thirty years after the Badab War, during the time period when the Red Corsairs were mainly a fragmented force of raiders that was beginning to grow into a much larger fleet. That being said, the Black Legion could easily be off casts from a Black Crusade that reached the Ultima Segmentum due to some warp shenanigans.
Which warband do you think makes more sense?