If Zayn wants he it he could have it. He has already performed for stadiums he could just chill and put out music. And he only seems to be dull because in interviews the other boys are loud. They only look good when he is around...now nvm. From what I understand he is very outgoing and charismatic but he is not to pressed to be loud about it. He has the looks and the voice he can do it ,if he wants it and I am not sure if he wants it right now.