I don't think it really matters to most if someone is in a higher position than them. People like to play various different roles that are in varying states of power compared to everyone else. For example, I've seen someone apply as a freed slave with little money and possessions while a lot of other people were in high positions of power and wealth. Nevertheless I'm always interested in a GoT roleplay no matter what the requirements. I've only seen the TV show though so my knowledge of the world might not be as good as those who have read the books.