These fanfictions can expand the view of the Harry Potter universe. They focus on an aspect that was already present in the original series but might not have been explored as deeply. By emphasizing Harry's abuse by the Dursleys, it can change the way fans view the relationship between the Muggle and magical worlds. It can also make fans more aware of the potential darkness that exists in the seemingly ordinary Muggle world. Moreover, it might influence how fans perceive the role of family in the series. Harry's lack of a loving family at the Dursleys' makes his found family at Hogwarts even more precious.
Well, in a way, it enriches the overall perception. The fanfiction about Harry being abused by the Dursleys gives a different perspective on his early years. It can make the series seem more complex as it shows that there are hidden traumas in Harry's past. This can lead to a re - evaluation of some of the events in the original series. For instance, his trust issues could be seen as a result of the abuse. It also can attract more attention to the characters around Harry during his time with the Dursleys, like Dudley, and how they are affected by the situation. It adds another layer of depth to the story, making the whole Harry Potter series feel more multi - faceted.