That Game of Thrones Spin-Off About Queen Nymeria Would Have Been an Oceanic Epic

House of the Dragon returns in June, and A Knight of the Seven Kingdoms: The Hedge Knight--aka "Dunk and Egg"--is moving full speed ahead. But despite the hunger for Game of Thrones projects, HBO is still being selective about its spin-offs. Among the shows left in the lurch: that Naomi Watts-starring prequel, the Jon...