I got an idea for this faction on which I'd like your feedback...
I want to have a single source which spurred Ozia into his research-spree and led him into his heretical beliefs... I haven't come up with a title for that primary source yet, so I just call it "the Text" for now...
The idea would be that Ozia in the course of his normal researches, before he started to travelling through the entire galaxy collecting ancient and rare tomes, had stumbled upon the Text, an apocryphal journal supposedly penned by the Emperor himself and describing His visions of what could have come to be if he didn't take the lead of humanity and let the Heresy happen...
Here's a summary of what the Text would tell (and that's where I need your opinion, does it hold water?):
If the Emperor hadn't conquered Terra and started the Great Crusade, by the end of the Age of Stryfe the Mechanicum would have been the most powerful force in the galaxy and would have conquered first Terra (killing the Emperor in the process), then the whole galaxy, crushing any resistance in its path as its armies would have grown numberless (and after develloping whole armies of vat-grown Primarch-like warriors)... And, by the end of M33 at the most, the galaxy would have been in relative peace, Humanity thus starting to get weaker as years went by...
Then the psycker genes in the human DNA would have started to really express themselves and the spreading madness would further weaken Humanity by drastically reducing its numbers. By the time the Mechanicum would have found a solution, Humanity would be reduced to a pale shadow of its former self, only a small percentage still surviving in the ruins of the once great Mechanicum Empire. It's then that the True Threats would rise (Necrons and Tyranids) and no one would be able to stop them from consuming the whole galaxy. The End.
Thus, to keep the end of Humanity from happening, the Emperor spent many years meditating and looking into the ebbs and flows of the Future for the best possible path. And He came to the conclusion that creating the Primarchs and manipulating half of them into betraying him in order to create a perpetual enemy was the only way which would keep Humanity strong enough to survive the Rise of the True Threats.
The Text then describes how the Emperor manipulated Lorgar first, knowing that his need for something to worship would push him into the clutches on the Chaos Gods, then (in no particular order) Angron, knowing that by refusing to help him defeat the slavers of his Homeworld he'd be partly alienated and easily manipulated into joining the Traitors, Magnus, knowing what telling him not to meddle in witchcraft without any good explanation would result in, etc...
And that'd be what the (Neo)Ozian know of the the Emperor's big plan (if the Text isn't a forgery made simply to corrupt of course...)
But in the last pages of the Text, pages that Ozia never found and that the Neo-Ozians don't even have the slightest idea they may exist (and thus aren't even looking for), there's something which would probably make them reconsider their position: According to those last page, the Emperor was genuinely surprised when it was Horus, whom he had in fact groomed to be the leader of the Loyalists, who became the Arch-Betrayer... And He came to the realization that even Him couldn't manipulate the Future to get to that "best possible solution" He had foreseen.
There... So what do you guys think of it?