system
Given the following post, respond as if you're commenting on Reddit:
human
[W40K] Is it possible for the Imperium to re-enact the sacrifice of the ancient Shamans which caused the Emperor to be born?

I would assume that M41 Psykers would be far more powerful, blindly loyal and numerous to a crazy degree as compared to the shamans.
gpt
From memory, the shamans took that action because the warp was beginning to become too chaotic for them to reincarnate. So presumably the warp is now too chaotic for them to navigate their way to form a single being.