One interesting concept could be how the beast souls change the characters' personalities. For example, if a character takes over the soul of a brave and fierce lion - like beast, they might become more fearless in the face of danger. It adds a new layer of depth to the characters.
In this type of fanfiction, the idea of magic being influenced by the beast souls is really cool. Maybe the magic takes on some characteristics of the beast. So if it's a snake - like beast soul, the magic could become more sneaky and venom - like. It creates unique magical abilities that we don't see in the original Harry Potter series.
One interesting concept could be the transformation of a character's personality. When a beast soul takes over, it might bring out primal instincts and different ways of thinking. For example, if a character is taken over by a fox - like beast soul, they might become more sly and cunning in their actions.
Draco Malfoy is another character that shows up often. His family's connection to the dark arts could lead to him taking over a more sinister beast soul, like a black panther. This could explore his character in a new light, either making him more of a villain or giving him a chance at redemption as he struggles with the power of the beast soul.
One interesting concept could be the unique bond between a wizard in the Harry Potter world and a dragon with a special soul. It might involve the sharing of powers or a deep telepathic connection.
Another concept is the use of soul magic in relation to the afterlife. Fanfictions might explore how a wizard's soul magic can interact with the realm of the dead. Maybe a powerful soul magic spell can communicate with the spirits of deceased loved ones, or it could even be used to prevent a soul from moving on if it's trapped in some sort of limbo.
One interesting concept could be the idea of a soul bond enhancing magical abilities. For example, two characters with a soul bond might be able to combine their spells in a more powerful way than they could alone. Another concept could be that the soul bond allows for a deeper understanding of each other's emotions, like being able to feel when the other is in danger even from a great distance. It can also lead to unique forms of communication, perhaps through a mental link that only they can access.
In some fanfictions, the Soul Bond is related to a powerful magic that has been lost in the wizarding world for centuries. When it forms between Harry Potter and another character, it awakens ancient spells and prophecies. This can bring a whole new level of mystery and adventure to the story as they try to figure out the purpose of the bond.
In this type of fanfiction, the multi - soul bond concept often explores deeper levels of loyalty and sacrifice. Characters with these bonds may be willing to go to greater lengths to protect each other. It could also introduce a new power hierarchy in the wizarding world, where those with multi - soul bonds are seen as having a special status. This could lead to jealousy or admiration from other characters, and open up a whole new set of storylines.
One popular 'do over' concept is having Harry grow up in a different environment. For example, if he was raised by Sirius Black instead of the Dursleys. This could change his personality and how he approaches magic. Another is if he was sorted into a different house. Say he was sorted into Slytherin, it would completely shift his relationships and the way the story unfolds. Also, some fanfictions have a 'do over' where Voldemort is defeated earlier in a different way, which then changes the post - war Hogwarts and wizarding world.
One interesting concept could be exploring more about the Marauders' time at Hogwarts. Fanfiction might expand on their adventures, like pranks they played that were never mentioned in the original book. Another could be different interpretations of Sirius Black's escape and his relationship with Harry during that time.
Some fanfictions in Harry Potter 2 might play with the idea of the basilisk having different powers or weaknesses. It could also explore the idea of a hidden connection between Ginny and the Chamber of Secrets that goes beyond what was in the original story. There might be fanfictions that change the role of certain characters, like making Neville a more central figure in solving the mystery of the Chamber.