Sequel Gap: Eighteen years between The Farthest Shore and Tehanu.
What Could Have Been: She was herself very keen on a planned adaptation by Michael Powell (director of A Matter of Life and Death) whose films she admired and believed that his vision aligned with hers. She co-wrote the screenplay with Powell and regretted it when it didn't get funding. The screenplay has been published but is now out of print.
Writing by the Seat of Your Pants: LeGuin was open from the start that she had no idea what any place on the gigantic world map was like until a story visited it. At least half were left still a mystery at the time of her death.