Just to pick up on one of the things I mentioned - how "fast" is play expected to go? That seems pretty important for the players to have a "living world" to interact with.
It's a bit crude to put it mathematically, but suppose that interacting with an element requires knowing N things about the element itself, plus R things about that elements relationship to other elements. What is the rate at which players learn things in play? And what is the rate at which the GM changes the truths about the element itself, and the element's relationship to other elements? If those two rates aren't calibrated in some fashion, either (i) the world becomes too static, or (ii) the players never get to engage with the world, but become mere spectators.