I would obviously love to be some random background Aes Sedai, but barring that it would be really fun to be seamstress somewhere like Bandar Eban or Cairhien.
Being a part of the show would be incredible. Member of the crowd, Aes Sedai, inn keeper. Just to have a brief moment to share in the creation of this world would be awesome.
Honestly I would take any role in the show. Going to school for digital media production taught me that I am actually good at adapting to various roles. If I had my choice, I would be a gleeman.