Another plot could involve Hermione being the one with the prophecy about her. She would then be the center of Voldemort's attention. Her intelligence and resourcefulness would be put to the ultimate test as she has to face the Dark Lord, and it would also change the dynamic between her, Harry, and Ron as they support her in a different way.
One interesting plotline could be where Harry is sorted into Slytherin instead of Gryffindor. This would completely change his relationships within the school. He might have to deal with different prejudices and form alliances with students he would have otherwise been at odds with in the original story.
Draco Malfoy often becomes a popular character in these fanfictions. In altered destinies, he might be shown in a more sympathetic light. For example, if his family is not as deeply involved with the Dark side early on, he could form friendships with characters like Harry. His internal struggles between the expectations of his family and his own moral compass can be explored more deeply.
In some fanfictions, there could be a twist where the gods are not as all - powerful as they seem. Maybe they are being manipulated by a greater, unknown force. This would force Percy and his friends to re - evaluate their relationships with the gods and find new ways to deal with the threats to their world. It would also change Percy's destiny as he might have to take on a more independent role in saving the world without relying as much on the gods' help.
One interesting concept could be the idea of a different Sorting Hat system. Maybe it sorts students based on different qualities or has a new set of houses altogether. Another could be a world where magic has different rules, like spells having unforeseen side effects that change the whole plot. For example, a simple levitation spell might make an object disappear instead.
You can start by looking on popular fanfiction websites. Check the reviews and ratings of different works. If a piece has a high rating and positive reviews, it's likely to be good.
One interesting concept could be how a character's altered magical core changes their spellcasting abilities. For example, if a character's core is infused with a different type of magic, they might be able to perform spells in a unique way that others can't. Another concept could be the origin of the alteration. Was it a result of a dark curse, or perhaps an experiment gone wrong? It could also lead to new relationships and power dynamics within the wizarding world as characters with altered cores might be seen as either threats or valuable assets.
One interesting plot could be that Harry is sorted into Slytherin instead of Gryffindor. This would completely change his relationships and how others perceive him. His friendships might form with different characters, like Draco Malfoy becoming a more positive influence on him rather than an antagonist.
One important thing is to respect the original work's concepts that the fanfiction is based on. Also, be aware of different interpretations of characters' altered destinies. Some fanfictions might deviate a lot from the original, so keep an open mind.
Percy Jackson himself is still very popular in these fanfictions. His journey of self - discovery and his ability to adapt to the changes in his altered destinies make him an interesting character to follow. Fans love to see how he overcomes new challenges.
One possible interesting plotline could be the unexpected alliances that form between different species in the Star Trek universe within the context of 'tangled destinies'. Maybe a Klingon and a Vulcan have to work together due to some strange cosmic event that ties their destinies. Another could be the exploration of alternate timelines where the destinies of beloved characters are tangled in ways that change the course of the Star Trek story we know.
One interesting plotline is when Lily is given the chance to change the future. In some fanfictions, she has the power to go back in time and make different choices, like whether to marry James or not. Another is when she discovers hidden magic within herself that no one else knew about. This often leads to her having to face new challenges and enemies.