Re: A Song of Ice and Fire books
He could visit Sothoryos in one of the last two books, couldn't he? I'm certain in a video interview Martin had an interest in much smaller scale stories set in his world. There's also a TCG out based on ASOIAF, so perhaps he has become more lenient toward fanfiction or, at the least, a semi-shared world approach.
"I never asked for this crown. Gold is cold and heavy on the head, but so long as I am the king, I have a duty … If I must sacrifice one child to the flames to save a million from the dark … Sacrifice … is never easy, Davos. Or it is no true sacrifice." - Stannis Baratheon