Yeah, the more I think about it the more I want this game. I saw the drawing of Kelsier fighting that Inquisitor and there are no words to describe how cool that looked! I wish I had enough talent to make a picture like that. I can still get the hardcover when it comes out, even though I didn't preorder it, right? Anyway if I had been a Sanderson fan back when they still sold the limited edition Table of Allomantic Metals then I would have bought one too.
Getting back on the topic of Spiritual Feruchemical powers, I wonder if you stored enough connection, could you take over a human without any Hemalurgic spikes in them? I bet you could, and think about a Feruchemist taking control of multiple other Metalborn. He could end up with more power then the Lord Ruler and his group of Inquisitors because there would be no Hemalurgic Decay to weaken their powers. Also, how epic would emotion storing be? I imagine it would work similar to a tinmind, with separate emotions being stored in individual metalminds. You could be storing fear while tapping courage!