I have tried to search everywhere to see if someone has proposed this before, its not as much a theory as tying vague things together with a flimsy thread. I think Trell is somehow related to the creation of the prophecy of the Hero of Ages, its one of the plot points not expanded upon in era 1 or discussed in era 2. We don't know how the prophecy came to be, and with era 2, we know trell is important to the future of scadrial. Just a thought.