I had an idea in the 40K thread of a Void Dragon SI.That sounds very interesting as a concept, but I personally feel myself running up against a wall when trying to spin that concept into an actual story (although that might just be my own rather shallow knowledge of and investment in W40k). Is it just going to be a novelization of the rise of the Necrons? That might be interesting, but how would the SI-aspect change things?
My main idea is that it would be instead of Emps fighting the Void Dragon and imprisoning it on mars The Void Dragon and Emps would-be allies of a sort. Not friends but more two creatures who have the exact same goals.
Could be an interesting story IMO.