Ded thread? Ded thread. *nods sagely* Just to get things moving again, a question: The Primarchs are supposed to represent one facet of the Emperor, yes? As you may know, half of them fell to Chaos. Do you think it is possible for the Emperor to fall to Chaos as well?
Pre-Heresy Emperor is a maybe, I mean he refused to kill a Chaos tainted Horus for a bit. As of now? He's too much of a god to be corrupted, all that belief that he is incorruptible is (by 40k logic) making him incorruptible!
Hey, that actually gives a good assplanation as to why the Sisters of Battle can perform miracles. Their Faith is making them stronger, because it makes the Emperor stronger!
Belief is an extremely powerful tool in 40k, so long as the believer has a soul and effects the Immaterium. Their faith works because of a 50/50 ratio of them believing and likely the Emperor becoming a god.