Also the debate on why he doesn't want yona to take the throne. I also think it'll be "freedom" bs and "not involved with political conflict that caused our families so much grief". I also think Sowoon has become a whiny bitch but I still think the author is trying to make him look "sympathetic" so that we would at least care when he eventually kills himself
it's completely valid if you hate him but i think soo won was meant to be a somewhat sympathetic and morally gray character from the start. so much that if we folllowed his story from the start we'd probably be rooting for him. when you think about it he had a pretty tough childhood, first the murder of his father whom he admired so much, then the pressure from his father's followers to take revenge and finally having to betray his friends for the sake of his ideals. must've been pretty hard to keep interacting with them like nothing's wrong to prevent suspicion all while knowing they'll have to part ways one day. he wasn't blinded by revenge either since he waited a long time to test king il's capability when the others were eager to immediately assasinate him. it's amazing writing from the author's part for creating a character so controversial that you either like him or absolutely despise him lol
I'm guessing the dragons reincarnation cycle could be stopped somehow since King Hiryuu's reincarnation finally appeared. I feel like the same could be said about the Crimson illness and that there is a trick to it to be cured of it with the help of Yona but the catch will be something that will save the white haired girl but not Sowoon because plotwise Sowoon has to die somehow; either by choice/sacrifice or by force.
Since I predict the dragons curse will be broken with this generation, Zeno will also become mortal. He might die at the end but I think the author will let him live out a mortal life growing older and stuff and we'll see him die offscreen and Yonas and Haks children visit his grave or smth.