Re-reading the first book's entries, are we sure the Lord Ruler turns Kelsier's head into a pink mist? I don't remember that from the book along with 1) the Kandra being able to impersonate him later, and 2) the Secret History short story taking place right as Kelsier died indicated he died as he was falling from the slap, not from the slap destroying his head, both of which indicate he didn't get his head destroyed.
Re-reading the first book's entries, are we sure the Lord Ruler turns Kelsier's head into a pink mist? I don't remember that from the book along with 1) the Kandra being able to impersonate him later, and 2) the Secret History short story taking place right as Kelsier died indicated he died as he was falling from the slap, not from the slap destroying his head, both of which indicate he didn't get his head destroyed.