I have been reading the book but finally decided to comment on something that just kind of seemed weird even though it happens all the time in books, movies, TV, etc.
Bluefingers tells the Lifeless to take the king below to hold him awhile before killing him, ultimately leading him to the one person that can heal him and ruin all of their plans. Why didn't he just order the kings death right there, avoid any mistakes like the king escaping or being healed? Obviously this is a small ticky tack thing, but when these Pahn Kahl have been planning all this time, does it make sense that they would just 'send him below until the right time' instead of ensuring his demise?
The story wouldn't have to change much if any. Bluefingers can order the room full of lifeless to kill the king as he and the princess are leaving the room to go sacrifice her. Meanwhile, Vasher upon landing on the ground and retrieving his sword earlier is forced to rush through the tunnel to get back inside the palace, sees Lightsong and lets him go free, then continues to Denth. Lightsong can stumble upon the room full of lifeless just about to kill the God King, they turn to face the new threat and he gets stabbed or something trying to save Seb. While he is slowly dying he gets the vision from his past, his vision fades and he sees the kings open mouth and performs his sacrifice just in the nick of time. You don't exactly have to see him heal the king, you could come along in the final chapters and have his brother holding him, saying he truly was the greatest man he knew. He gave his life time and again.
Anyway, I hate to propose any changes to a very good story, but I thought it seemed a little strange.