Outside of changes like pushing timeline up on when aemma arryn died which is going to cause continuity error later on the episode was good. Rhenyera was 8 when her mother died they changed it to her being 14-15. The problem arises from the fact that there was a character who fought daemon in 130AC when he was 20 so he would have been born by the time aemma died according to the show which isn't possible since the he was son of spoiler alert viserys and allicent hightower who didn't marry until a couple of years after aemma's death. Hopefully next episode will show the daemon's conquest of stepstones which happened soon after his banishing but was only mentioned in the books. Turning Starks blond was also a bagd decision since Starks historically have black hair as being house with almost no andal blood (blond hair is trait of being an andal). Well rhenyera did hold her promise as in she brought back Starks to the seven kingdom who after jaeherys and allysane folly in their early part of the rule with relation to the north had decided to cut themselves off completely from what happened in the south even if they still were part of the seven kingdoms to the point they even voted for rhaenys targeryen during the great council so her son who would have been a valeryon would rule the seven kingdoms just out of spite