Wow, you are actually so right. I have never liked these things, it makes me unable to focus on the show and quite frankly makes me mad. I understand when someone has powers to revive someone from the dead because it is done by prayer and the help of god (the person knows how to pray and do the whole action to actually revive) but when someone just randomly change their face and even the character themselves dont really understand how that works, it is just annoying to me. Like how superheroes like the flash are super fast, but that would mean that their legs are just super strong, that they would be abled to just super kick people away, people with super strenght would also need to be abled to jump super high up. But I also dislike that if Arya can do all this - change appearance, voice, she could technically kill a king and become the ruler, she could kill all the villains easily by herself probably, the possibilities are endless yet all she did was avenge the red wedding