Here are some questions. I don't think any have been answered, but I'm not entirely sure so just tell me if they have. I realize I'm getting really technical, but my mind likes to have scientific explanations for everything.
1. The metals Cadmium, NotCerrobend, and Copper all work with a 'bubble' or 'cloud', and Iron, Steel, Zinc, and Brass also work that way in the sense that you can only affect things at a certain range. Does the cloud have a specific size? Does it get bigger if you flare or use duralumin with the metal? Or does the cloud have no distinct ending, but just gets less and less powerful the further away you go from the source?
2. What happens if you burn Zinc and Riot happiness and sadness at the same time?
3. What happens if you flare or use duralumin with Gold or Electrum? Does it make the shadows clearer, or does it make you see further into the past or future? Does it do anything at all? Does it perhaps tell you something else about the shadows, like how likely they are to happen or to have happened?
4. With Duralumin, can you enhance Nicrosil, and vice versa? If so, you could get a chain of people (either Mistborn or Nicrobursts), standing in a line, and then have each one burn Nicrosil while touching the person in front of them. The person in the front would then have EXTREMELY amplified powers to the next metal he/she burned. (The front person would be Mistborn).
5. Since a Mistborn burning Lerasium will enhance his powers, what would happen if a Mistborn or Duralumin Gnat burned duralumin with Lerasium?
6. If Lerasium in alloy creates Mistings, couldn't you get a double-misting by giving someone two different alloys of Lerasium? Or would the second alloy 'cancel out' the first?
7. Can you alloy Lerasium with Atium? What would happen?
8. Concerning the two types of mist: Does burning Tin make the Ruin mits more clear, just like it makes the normal ones translucent? Does using Hemalurgy attract the Ruin mists? Can a person using Hemalurgicly-stolen Tin powers still penetrate the mists?
9. If the Lord Ruler was controlled by Ruin through the Atium Bracers on his arms (which stored age), shouldn't that have shown what Atium's Hemalurgic Power is?
10. How does the Steel Inquisitors' Eyesight work? Is it just the Allomatic properties of Iron and Steel (the blue lines) or is it a different power granted by Ruin? It doesn't seem to work in exactly the same way that Ironpulling and Steelpushing lines work.