You've said previously that the molecular structure of metals serve to act sort of like the Aons in AonDor. Why, then, can mists power Allomancy? Shouldn't the metals themselves be the things causing the powers? How does this work at a deep level? Alloy of Law claims the body itself is what filters Preservation's power into effects, not the metal itself, so this seems contradictory with what you've said.

Szeth, while he holds Jezrien's Honorblade, has his eyes change color to a sapphire blue from a dark green. If Jezrien himself were to hold his Honorblade again, would his eyes also become sapphire blue, or is this an effect limited to non-Heralds? Would a Returned also have their eyes change color if they held Jezrien's Honorblade?

You would think there would be ten colors of eyes on Roshar. Instead, there are less than ten (there are no ruby red or diamond eyes mentioned, for example). Why are there less than ten? Is it because some eye colors are recessive/some colors are not passed on? It certainly seems like the ten orders of Radiants should have descendents with ten different eye colors, after all.

Marsh says the Inquisitors directly pounded spikes through the donor to the recipient to avoid power loss (which was supposedly significant if the spike remained out of the body long). However, Vin has her earring out of her ear very very often, but Sazed claims she was nearly twice as strong as a regular Allomancer at using bronze. Why was her spike not really weak from power loss?

If a Surgebinder went to another world with infused gems, would they still automatically be able to Surgebind, or is that an effect limited to Roshar?

Hoid uses Allomancy in one of Shallan's flashbacks. How can Hoid draw on Preservation's power on Roshar? Does it teleport? Shouldn't he only be able to burn metals on Scadrial?

Breath seems like it doesn’t run out like Stormlight. You Awaken something, and it lasts basically forever. But if you Lash something, the Lashing ends a short time later. Why does Stormlight run out and Breath not?

Why can Breath power a Returned for only a week, but can power an object forever?

Is the color aura of an Awakener them 'leaking' Breath like someone 'leaks' Stormlight?

Why isn't Hoid's color aura noticed by anyone on Roshar?