5. I was wondering if Shallan's Memories might be connected to/ the same thing as the Almighty's picture journal thing. Dalinar mentions that the visions are some sort of journal, and I'm thinking they are a very advanced form of Shallan's Memories; the Almighty does say that most of the visions are ones he has seen directly and the rest of borne out of his fears. I'm thinking he took Memories of those visions and then projected them into the future/past/whenever.
Projected them into the future?
I think it is more -ahem- mundane than that.
My theory is that The Origin of storms contains a larger part of The Almighty that "leaks" a part of his power in the form of highstorms, and was imprited with his memories.
Sort of like a supernatural answerinng machine.
Which is the reason why the visions repeat themselves after a while.
I also think that spren are a part of the "mental" component of the Almighty, and that they need humans to channel the "spiritual" power which is the Stormlight.