I really need to do more research but I'm thinking Kel changes the outcome of various things the assassin was originally predicted to do. If I remember correctly in the past books the WLW kills the empress with a blade or some way but as we find out that never happens. I think that because Kel intervened. Like when he walks into the private meeting between Esmi and the assassin, I think Esmi was going to die that night but his entrance prevented it. That's why that night he dreams of that exact death.
Again I do need to do research.
And Kel at one point refers to himself as the greatest Hold Aspect Emperor and say they death of his brother and uncle Madrid him great. Maybe the next series?
I like it