Absolutely a treasure trove!
So far as Jove lore goes, the trifecta is Inheritance, Templar One (say what you will of TonyG, there’s a Sleeper lore dump), and Theodicy.
The issue is that all of these are essentially from unreliable narrators. I was quizzing CCP DelegateZero on Inheritance at a Fanfest, and while he mostly played coy and laughed at me, he did reply to one of my, “So, per Inheritance, we now know X,” comments with, “Remember, this is from the perspective of the Jove.”
So, remember that while it’s a treasure trove, it isn’t like we’ve found writ of god. Even the Emergent Threats trailer is very specifically all player voices; while highly suggestive, it’s still not writ of god, but putting theories and mystery to video.