One possible plot point is that Harry's transformation into a snake might give him access to parts of the wizarding world that are normally off - limits to humans. He could explore hidden snake lairs or ancient magical places only snakes know about. His friends, like Hermione and Ron, might have to study a lot of old magic to find a way to turn him back. And it could be that in his snake form, Harry has a different view of magic, seeing things from a more primal and instinctual perspective.
Well, one interesting plot point could be how Harry adapts to his new snake form. Maybe he discovers new abilities like slithering really fast or having a heightened sense of smell. Another could be how his friends react. Do they recognize him right away or is it a struggle? And then there's the whole aspect of how he communicates in his snake form. Does he hiss in a way that can be understood by other magical creatures?
One interesting plot point could be how Hiccup adjusts to the new physical form. For example, he might struggle with the different clothing styles and social expectations for girls in his world. Another could be the reactions of his friends. Some might be shocked at first, while others could be more accepting and help him through the transition. There could also be a plot point about how this change affects his relationship with Toothless. Maybe Toothless initially doesn't recognize him and Hiccup has to find new ways to bond with his dragon.
In this fanfiction, a plot point could be how Anakin's power manifests in his child form. Since he was already extremely powerful as an adult, as a child, it could be both a wonder and a danger. His raw power might be harder to control, and it could attract unwanted attention. Additionally, the story could focus on how Anakin's experiences as a child this time around impact his view of the Force. He might develop a new and unique understanding that could set him on a different path compared to his original one.
The way Ash adapts to Pikachu's instincts could be really interesting. He might find himself being more drawn to shiny objects or having an urge to store food in a certain way. And his relationship with his own Pikachu (if it still exists in the story) would be very different. They could become like equal partners instead of trainer - Pokémon.
Well, in this fanfiction, perhaps the snake is a magical guide for Harry. It could lead him to hidden places in Hogwarts. For example, it might show him secret passages that were previously unknown, adding an exciting new dimension to the story. This could also change the dynamics of his relationships with other characters, as he now has this special connection with the snake.
In such a fanfiction, a possible plot point is his social interactions. He might be more isolated at first because of his unusual upbringing. However, this could also lead to him making very strong and loyal friends later. Also, his skills in magic might be more focused on defensive and survival magic, given his snake - raised background.
Another plot could involve Harry's friends' reactions. Some might be very accepting and helpful, while others could be confused or even act differently towards 'her'. This could lead to some interesting character development and story arcs for both Harry and his friends.
Perhaps there's a plotline where the transformation into a ferret has some unforeseen side effects. For example, Harry might gain some ferret - like abilities such as enhanced sense of smell or speed, which he then uses to his advantage in solving a mystery or escaping from a dangerous situation in Hogwarts. He could also struggle with some of the more ferret - like instincts, like being tempted to hoard shiny objects.
It could be Voldemort. He might see Harry's new snake form as a way to either use him for his own evil purposes or as a threat to his power. Since snakes are often associated with Slytherin and dark magic, Voldemort might try to control Harry.
A really interesting plot point could be the love interests that develop for Harry in his new form. Since he's now a girl, perhaps some characters who never showed interest before start to notice him in a different way. Neville, for instance, might start to have a little crush on this new Harry. And Draco himself could be conflicted as he might start to develop feelings for Harry which would completely change the dynamic of their rivalry.
In this fanfiction, a possible plot point is that the goblins help Harry in a way that challenges the traditional wizarding world's rules. For example, they might introduce him to a different kind of magic that the wizards have long forgotten. Also, the goblins could have their own motives for helping Harry, like seeking a change in their status within the magical community. This creates an interesting dynamic as Harry has to navigate between his own goals and the goblins' interests.