Gurkhal said:
That said, for some reason I'd also love to see something like
Fields of Blood
for 40k - although this is less roleplaying and more about realm management, I could see it being tied into the other lines easily, with people taking on the roles of Imperial Commanders, Rogue Traders, Chapter Masters or Chaos Warlords who have managed to gain control of one or more planets.
On the other hand, this too could be a single book, as there is probably not much material the writers could use to "stretch it out".
I suppose you have a point in that it is certainly possible to create an entire RPG line just for the Guard (or other Adepta) - it worked for the Marines as well, after all. I maintain that a xeno race would offer more potential for content for multiple books, simply due to being "more different", but I would have to agree that the IG is overall likely more popular than, say, the Tau (which I'd see as the primary candidate for their own line).