I'm still confused by the initial question though. It's a story. There's a tale to be told. That's why there's a mystery. What are you expecting, a text message declaring intentions?
No, the in-game story works absolutely perfectly for me, I love it, I love how it's unfolding and I think it works great.
However a ton of people on the forums seem to talk about a different story to that which is taking place in-game, and I'm trying to confirm the forum-based elements and see if there's any actual, real, hard evidence (from Primary Sources in-game, as much as we know so far), or if it's just a case of some misinformation/assumption/"fake news" propagated by manipulative entities in some of the novels being taken at face value. I realise the Novels are official Lore, but that doesn't mean that the information people have in the novels is factual, they may be lying, or it may be incorrect.
I'm questioning this because I know that Klaxians and Oresrians are actually from Elite (original) (actually the accompanying short story, not even in-game AFAIK), and that was retconned totally out of the game in FE2 and FFE (I could be wrong but I don't think they were called anything but Thargoids in FFE and were absent from FE2 entirely) - BUT Fan Fiction stories continued Klaxians and Oresrians material in games like Oolite etc., including material by Drew Wagar, who later wrote Premonition where he used the idea from the original elite/fan fiction of the Klaxians and Oresrians.
If you read this, for example: http://elite-dangerous.wikia.com/wiki/Thargoids the bits here that are actually in-game do not mention anything about Klaxians and Oresrians until the bit where it explitly says it's from Premonition. The stuff below that about social structure and things, none of it is from sources, it's all assumptions and things.
Like I said, I'm trying to work out what bits are facts.