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.
"..the mere intimation that there might be more to a heroic narrative than the heroes are the Good Guys, the villains are Bad Guys and the heroes should Win a rousing Victory appears to be in itself such an offensive contention that it arouses a kind of defensive knee-jerk hysteria just by surfacing." - Richard K Morgan