- Only noticeable in the final blurb in the first book's appendix: mention is made that the kandra are now the only practitioners of Hemalurgy. But at the end of The Hero of Ages, almost all of the kandra population was dead, having reverted to mistwraiths so that Ruin couldn't control them. That means that when Sazed ascended to become Harmony, he gave an entire species of heroes their minds back. Manly Tears.
- The fact that Marsh is still working to help people who are continuing Kelsier's work. Three hundred years later, despite being seen as the Grim Reaper and a sign of death by everyone, he's still working.
Heartwarming / The Alloy of Law