The impact would be huge. Since Harry was the main character, his death in the first year would mean the end of his journey to defeat Voldemort. The other students at Hogwarts would have to deal with the fact that their so - called 'Chosen One' was gone. Magic in the wizarding world might be more vulnerable to the dark forces. There would be no more of Harry's adventures in the Forbidden Forest or his battles against the dark wizards and creatures. It would be a much darker and more uncertain world for everyone.
If Harry died in his first year in that fanfiction, it would likely mean that the prophecy would be unfulfilled. This could lead to a different kind of power struggle in the wizarding world. Dumbledore's plans that were centered around Harry would be in ruins. Also, characters like Snape might have different fates as their relationship with Harry was a big part of their development. It could also mean that the Deathly Hallows would remain untouched or be used in different ways by other characters.
It could add a new dimension to Harry's relationships. Instead of just having his main friendships with Ron and Hermione, having Daphne in the picture early on might change the way he views Slytherins. This could lead to a more inclusive Hogwarts, where the house rivalries are less intense.
Well, it changes everything. Without Harry, there's no 'Chosen One' to fight Voldemort. So, Voldemort would likely rule the wizarding world unopposed. The Hogwarts School might become a place that only teaches dark magic or is completely under Voldemort's control.
In that fanfiction, it could be that a character who was secretly working for Voldemort, perhaps someone we didn't suspect at first, like a seemingly innocent teacher or a student who was under the Imperius Curse. Another option is that a group of dark wizards invaded Hogwarts and Harry was unfortunately caught in the crossfire and killed. Or perhaps a magical artifact malfunctioned and ended up being the cause of his death.
The relationships that Harry was supposed to form later in life, like his friendships with Ron and Hermione, would never happen. And the whole wizarding world would be different. Without Harry, there might not be someone to stand up to Voldemort in the same way. So, the power balance in the wizarding world would be completely shifted. Also, the mystery around Harry's scar and his connection to Voldemort would be left unresolved in a way that leaves the story with a sense of incompleteness.
Well, it could be a major turning point. It might change the power dynamics in the wizarding world significantly. For example, Voldemort would lose one of his most loyal and powerful followers. This could lead to a shift in the way he operates and make him more desperate or erratic. It also might affect the morale of the Death Eaters, some could lose faith in Voldemort's cause without Bellatrix's unwavering support and leadership among them.
In this kind of fanfiction, the prophecy about Harry might be interpreted differently. His metamorphmagus ability could be seen as an added factor in his fight against Voldemort. He could use it to deceive Voldemort and his Death Eaters, making it harder for them to target him. Also, the way he interacts with the wizarding community would change. People might be more in awe or more suspicious of him because of his unique ability, which would impact his social standing and the way he is perceived in the overall story.
It could also lead to new alliances for Harry. Since he has refused his family, he might seek support from his friends more, strengthening those relationships. This can change the power dynamics in the fanfiction. For example, Hermione and Ron might become even more important to him, and together they could face new challenges that were previously unthinkable without his family's influence.
It can divide the fandom. Some fans who love the original dynamic between Harry and Ron might be disappointed or even angry at this deviation. They might see it as ruining the essence of their friendship.
It can make the plot more complex. For example, if Hermione was male, his relationship with female Harry could be seen as a potential romantic one earlier on, changing the love triangle aspect. Also, a male Hermione might approach academic challenges differently. The overall power dynamics in the wizarding world could shift. Male characters might not be as dominant in certain areas as they were in the original story.
The first threat sets the tone. If it's a serious threat like a natural disaster in the first story of a series, the whole plot will likely be about survival and rebuilding.