User blog comment:Vivaporius/AT Idea: Imperial Civil War/@comment-3341288-20120407013402/@comment-3398633-20120407172709

They'd be to concerned with handling the daemon empire that conquered Segmentum Tempestus. Forgot to tell you about that. Anyway, all of that has been considered. Abbadon, the Tau, the 'Nids, Eldar, and the Necrons have been given roles in the setting. But I'm notorisiously lazy, so you'll have to ask first. >.<