The description of him being tall in fanfiction can enhance his leadership qualities. People often associate height with authority, and Harry, being tall, can be seen as a more natural leader among his friends and peers. He might be more likely to be the one others look up to, both literally and figuratively. This can influence how he is portrayed in group situations, like during battles or when making important decisions.
It makes him more relatable as a teenager. Pranks are a common part of youth, and showing Harry as a prankster in fanfiction gives him a more human side.
The neglect can lead to a sense of distrust in Harry towards family - like relationships. He might be more hesitant to form close bonds with others at first. However, as he grows, he learns to distinguish between those who truly care for him and those who don't. This experience also gives him a deep well of empathy for others who have been through similar situations, which shapes his character into a more understanding and kind person in the long run. He has to face many challenges alone, which toughens his mental state and makes him a more resilient wizard.
If Harry is taller in fanfiction, it could make him seem more confident. People often associate height with leadership, so he might take on more of a leadership role among his peers.
The new uniform can symbolize growth. If it's more elaborate or has new features, it can show that Harry is becoming more important or recognized at Hogwarts. For example, if it has special markings that signify his achievements, it reflects his development as a wizard.
The abuse can also make him more empathetic. Harry has known pain, and in this situation, he could use that pain to better understand others who are suffering. This could lead to him becoming a champion for the underdog in the wizarding world, using his experiences to fight against all forms of injustice.
His character may seem more exposed. The glasses are a sort of shield for him, and without them, he might appear more open. It could also make him seem less like the 'chosen one' at first, as the glasses are a very recognizable part of his look.
Well, it likely makes him more independent. He has to rely on himself more without parental support. He might grow up quicker, learning to fend for himself and make his own decisions earlier than he would have with loving parents.
He might be more distrustful. The feeling of being abandoned could make it hard for him to trust others easily. For example, when he first meets Dumbledore or his new friends at Hogwarts, he may be hesitant to open up completely because he's been let down by the most important people in his life - his parents.
It can make him more independent. Without his parents' protection, Harry has to learn to fend for himself, which can lead to him becoming more self - reliant. He'll have to figure out how to solve problems on his own.
It could make him more cautious. After talking to the Horcrux, he realizes how devious Voldemort's magic can be and becomes more careful in his future encounters with dark magic.