5. In future!Scandrial rather than having vials filled with metals, Allomancers keep metal pills.
4. MeLaan was the Faceless Immortal that converted Wax and gave him his earring.
3. In the afterlife, Kelsier and Mare adopt Vin as their daughter. She also gets to see Reen and reconcile with him.
2. Ranette is the lesbian that Brandon Sanderson mentioned appeared in Alloy of Law.