In the wider wizarding world, the public who once saw Harry as a hero would be horrified. The Ministry of Magic would likely get involved, and there could be a manhunt for Harry. This would also change the power dynamics among the different wizarding factions. Those who were against Harry all along would use this as proof of his 'evil' nature, while those who supported him would be in a state of confusion and disbelief.
In fanfiction, Harry Potter can change the Wizarding World in many ways. For example, he might introduce new spells or magical concepts that were not in the original series. He could also have different relationships with other characters, which in turn would affect the social dynamics of the Wizarding World.
They might become closer friends. Cedric could be grateful to Harry for trying to save him during the Triwizard Tournament, and Harry would be glad that Cedric survived. They could start sharing their experiences and knowledge about magic more often, and perhaps even train together to become better wizards.
Well, it completely flips the good - guy - vs - bad - guy dynamic. Harry was seen as the hero, the one who was going to save the wizarding world. If Hermione kills him, it throws the whole prophecy and the fight against Voldemort into chaos. It's like the rug has been pulled out from under the story's foundation.
The 'Snape kills Harry' fanfiction would shatter the relationships that were built in the original series. For example, the friendship between Harry, Ron, and Hermione would be left in tatters. Hermione and Ron would be devastated and likely seek revenge. Also, Dumbledore's plan, whatever it was that involved Harry, would be completely ruined. The whole balance of good and evil in the wizarding world would be thrown into chaos.
Well, it could change things a great deal. For one, it might add a whole new layer of family drama. Bellatrix being Harry's aunt could mean that there are secrets in the family history that were previously unknown. It could also make Voldemort's connection to Harry even more complex, as Bellatrix is one of his most loyal followers. Maybe it would lead to some internal conflict within Bellatrix herself, having to balance her loyalty to Voldemort with this newfound family tie to Harry.
Their relationship could lead to a more inclusive wizarding world. If Raven has different beliefs or magical practices, it might encourage others to be more open - minded. For example, if she's into a more spiritual form of magic, it could inspire new research and study at Hogwarts. Also, their marriage might set an example for inter - house or even inter - species relationships, which were previously not so common.
It could completely shift the power balance and moral compass of the story. With Dumbledore on the 'dark side', the usual alliances and conflicts would be turned upside down.
Well, for one, the relationships change. If Harry is a girl, the Marauders might be more protective or interact with her in a different way. For instance, James might be more chivalrous towards her. Also, the way she is perceived in the wizarding world could be different. A female hero might face different expectations compared to a male one.
The wizarding world would be in chaos. Harry is seen as a hero and the 'Chosen One'. His death would leave a huge void. The Order of the Phoenix would be devastated and might seek revenge on Draco and those associated with him. Hogwarts would also be in turmoil, with students and teachers alike shocked and saddened. There would be a great deal of fear as well, as Voldemort's forces might see this as an opportunity to gain more power.
Well, it completely flips the story on its head. Dumbledore is a central and positive figure in the original. His death is a major turning point, but for Draco to kill him for Hermione means Draco's character has a huge shift. It also makes Hermione a much more central and controversial figure, as her presence has now caused such a drastic event. The relationships between the main characters like Harry, Ron and Hermione would be severely strained as they deal with this new and unexpected development.