If Merlin died in the fanfiction, it could trigger a series of tragic events. The balance of power could tip, and the villains might seize the opportunity to attack. It could also bring out hidden strengths in the remaining characters as they try to cope with the loss.
Perhaps some of the snooty nobles who look down on Merlin and constantly try to get him into trouble. They could be making fun of his clumsy ways one too many times and he just snaps and hits them with a shoe. It would be a moment of satisfaction for the readers who don't like those arrogant characters.
Fragrance in the Red Sleeves usually signed the person with the A grade, not the book. An A contract meant that the author could sign multiple novels at the same time, which meant that the same author could sign multiple novels at the same time. A book contract meant that the author could only sign one novel and that this novel was the author's main work.
One possible secret could be that Merlin is a powerful sorcerer from an ancient and powerful magical lineage. Maybe his family has a long - standing connection to Camelot that has been kept hidden.
Merlin's relationship with Arthur could become even stronger. They might have more adventures together and truly become equals in their fight for Camelot. Their bond could be tested, but in the end, it would only grow deeper.
Well, one prediction could be that Merlin discovers a new form of magic. Maybe he'll find an ancient spell book that has been lost for centuries. This could lead him on a journey to master this new magic, which might be different from the magic he already knows. He could face challenges along the way, like dealing with other wizards who are jealous of his discovery.
These fanfictions often explore themes of acceptance and love in a different context. They can help fans to better understand the characters on a deeper emotional level. For example, seeing how Merlin navigates his identity as a gay man in a world full of magic and political intrigue gives a fresh perspective on his character.
Arthur could visit Merlin in the tower. He might be curious about what Merlin does in his secret place or he could be in need of Merlin's help and follows him there.
One scenario could be when Merlin loses his best friend. In some fanfictions, if Arthur is killed in a battle and Merlin is powerless to save him, he would break down in tears. He has dedicated his life to protecting Arthur and seeing his failure would be a huge blow.