I was wondering if anyone was using the idea that some of the expected truths of the imperium have no factual basis, or a different factual basis than expected. Everybody thinks X, but actually Y is the truth.
Something along the lines like the emperor having nothing to do with keeping warp travel safe, instead its <something else>
The emperor isn't actually dead, he's in hiding on some backwater world.
There are friendly warp entities that can be helpful, but would cause too much of a headache if this was known.
Squats are secretly pulling the strings of the inquisition.
Or things that used to be canon, like discovering a IMperial Guard regiment of beastmen?
I suppose some of these ideas might be a part of the Radicals Handbook, but I'm wondering if anyone has used ideas like these in play. You'd have to make the discovery of the "truth" something the PCs could stumble upon in the course of their investigation.
Thoughts?