Well, it really depends on the character and personality of the sibling. If they're supportive, it could strengthen Harry. But if they're competitive or have a conflicting personality, it could lead to lots of drama and challenges for Harry in the story.
It completely shifts the power balance. Harry being the Inferi Lord gives him immense and dark power, which alters how other characters interact with him and changes the entire plot's direction.
In terms of the overall plot, it can take a completely different turn. Instead of Dumbledore having a master plan to defeat Voldemort, it might be up to the younger characters to figure out everything from scratch. This makes the fanfiction more of a coming - of - age story where the kids have to face the ultimate evil without the safety net of a competent Dumbledore.
It changes the power balance. Instead of the houses competing, they support each other. For instance, in battles against dark forces, the combined strength of all houses makes them more formidable.
Haki can completely shift the power dynamics. If a character like Ron suddenly discovers Haki, he could become a much more formidable opponent. He might be able to use it to intimidate Death Eaters or other dark wizards, adding an edge to his character that wasn't there before.
Martial Magic can greatly change power dynamics. If a character masters Martial Magic, they can often overcome opponents with more traditional magic skills. For example, they can quickly close the gap in a fight against a long - range spellcaster.
Well, it completely flips the gender roles for Harry. In the original, Harry is male and a hero in a more traditional sense. If he's the wife, he might be in a more submissive or supportive role rather than the main action - taker. Also, his relationships with other characters like Ron and Hermione would be different. Ron might be more protective, and Hermione could be more of a guiding figure for Harry in this new role.
This twist would likely change everything. Harry's entire moral compass could be shaken. The way he views magic and the wizarding world would likely be warped. And it would definitely cause chaos among his friends and allies.
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.
It can bring a fresh perspective. With Draco as a girl, their interactions and relationships with other characters might shift, and their personality traits could evolve differently.
It changes the power balance. In the original, Harry was a powerful wizard but still had limitations. With unlimited strength, he can take on more powerful foes more easily. For example, in a fight with a powerful Death Eater, he can overpower them physically, which was not always possible in the original story.