They tied up all loose ends in the ending, I will give them that BUT I would have preferred for the writers to have found a way to keep Bong Hwan in Joseon because he DID everything of the show, including making that baby!! With the past changed, the future could have changed too, even w/o Bong Hwan anymore. The king fell in love with Bong Hwan and NOT So Yong. So Yong did nothing except try to kill herself. She doesn't even love the king as much as Bong Hwan did. Only Byeong In truly loved the So Yong so they should have just let So Yong not go back.