It would probably have a profound effect on Harry's own journey. Killing Bellatrix could be a very dark moment for Harry, even if she is a villain. He might struggle with the moral implications of taking a life, which could add more depth to his character. On the other hand, it could also be a moment of catharsis for him, considering all the harm Bellatrix has caused, especially to those he loves like Sirius.
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.
The disownment could also change the relationships between other characters. For example, Harry's friends might become more protective of him, or some characters who were once neutral might side with Harry against James. It can also lead to a rift in the wizarding community if James is a well - respected figure. People might take sides, causing political and social unrest within the magical world. This can completely shift the focus of the story from the original plot to one centered around family drama and its consequences.
If Bellatrix was Harry's mother in this fanfiction, the whole plot would be a mess. Harry would be born into a family of pure - blood maniacs. His magical education would likely be focused on the dark arts rather than the normal curriculum at Hogwarts. His relationships would be warped. He may not have the same friends like Hermione and Ron. And his relationship with Voldemort would be extremely complex, as Bellatrix was one of Voldemort's most loyal followers. It would be a story full of moral and ethical dilemmas for Harry.
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 can completely change the story arc. Since Harry is a central figure, if he's uncaring, the whole fight against Voldemort could be affected. He may not be as motivated to seek out Horcruxes or train for battles.
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.
On the other hand, it could also start some interesting discussions within the fandom. It might make fans think about the darker aspects of the wizarding world that were not fully explored in the original books. For example, how much pressure can a young wizard like Harry actually bear? However, it also has the potential to make some fans feel uncomfortable or even depressed, especially those who are more attached to the positive and heroic image of Harry.
Well, it completely changes the nature of the magic - based world. Usually, the battle between Harry and Voldemort is about magic spells and wizardry. With a gun, it brings in a Muggle weapon, which might make the wizarding world seem less special. It could also change the way other characters view Harry. Some might see him as a radical for using such an un - wizard - like method.
In a more complex scenario, Bellatrix could be trying to use a dark magic ritual that would cause great harm to the wizarding world. Harry discovers her plan and has to engage her in a magical struggle. In the process, he manages to turn her own dark magic against her, which results in her death. This would show Harry's ingenuity and his ability to use the enemy's own weapons against them.
It may also divide the fandom a bit. Some fans who are more attached to the original positive and heroic narrative of Harry may not like the idea of him dying in fanfic at all. While others, who enjoy exploring darker and more alternative storylines, might embrace these 'harry potter dies fanfic' and even contribute to creating more similar stories, which can cause some friction between different groups of fans.