Ted Herman (paraphrased)
Why were the trees at the palace in Azir bronze? Soulcast?
Brandon Sanderson (paraphrased)
Soulcast for decoration.
Why were the trees at the palace in Azir bronze? Soulcast?
Soulcast for decoration.
Does Lift's shadow behave abnormally with respect to the sun or infused spheres?
Yes, there is something going on with her shadow, but no specifics given.
Could Lift convert food from other cosmere worlds into Stormlight?
Yes. Lift's Spiritweb has something changed about it to allow converting mass to Investiture directly.
Would emotion spren react in any way if a Rioter or Soother were operating in the area?
Yes, you would be able to see that sort of change if you were paying attention.