I have to agree somewhat with the OP. Books, especially longer, complicated books like what Sanderson writes, are so difficult to translate properly. However, this doesn't me I don't want to see a film adaptation. Instead, I think it would amazing if Brandon wrote and new Cosmere story specifically for film. In my opinion this would be best done with a TV series. It's be important to limit the number of episodes and seasons so it doesn't drag out or become to cumbersome. I would love to see Sanderson write soecifically for a show, and think that he could pull it off quite nicely.