The Lord of the Rings: The Rings of Power significantly changed a particular character, making it unlikely that their proper prequel story will ever be adapted. Of course, it would have been difficult for the Prime Video series to entirely avoid making changes to canon. Tolkien's works set before Frodo's story are written more like textbooks than novels, making a literal adaptation impossible. If Middle-earth's Second Age events were to be brought to the screen, changes are a must. Still, it's a bit disappointing that Rings of Power's adjustments have now limited potential future movies.