In the fanfic, it's possible that Harry's experiences throughout his adventures at Hogwarts contributed to his success in Divination. All the strange and mysterious things he had encountered before might have given him an edge. He could have used his knowledge of magic in general and applied it to the divination exam in a unique way.
The plot could be that Harry starts to have extremely vivid and accurate prophetic dreams, much more so than what he had in the original series. He uses these dreams to foresee danger not only for himself but for the whole wizarding world. For example, he might predict an upcoming dark wizard attack on Hogwarts much earlier and be able to prepare defenses. His newfound divination skills make him a key figure in the fight against dark forces.
Yes, he does. In many fanfics, Harry might take divination seriously as it could offer him new insights or ways to deal with the challenges he faces. It could also be a way for him to explore a different aspect of magic that he didn't fully appreciate in the original story.
One popular fanfic idea could be exploring the backstory of the Divination teacher. Maybe she had a hidden past as a powerful seer in a different wizarding community before coming to Hogwarts. This could add depth to her character.
There are quite a few fanfics where this happens. One popular one is 'The Mystic Visions of Harry' where his divination experiences lead to unexpected adventures.
One reason could be that he's desperate for any form of guidance. After all the chaos he's been through, divination might seem like a way to get some answers about the future. It's like grasping at straws, but it could be important to him.
One popular 'Harry is good at divination' fanfic is 'The Diviner's Path'. In this fic, Harry's natural intuition and his study of divination lead him to make some amazing predictions that not only help him in his Hogwarts adventures but also change the course of the wizarding world. It's a really exciting read with a lot of creative interpretations of divination.
Ron would be over the moon for Harry. He'd probably joke around and say something like 'I knew you had it in you, mate!' and then they'd celebrate together with some butterbeer or something from the Hogwarts kitchens.
Maybe he doesn't trust the teacher, Professor Trelawney. Her rather flamboyant and often inaccurate predictions might have put Harry off. He could see that her teaching methods lack the sort of solid foundation he looks for in a class, especially compared to more reliable professors like McGonagall.
Divination can be significant in fanfiction as it can add an air of mystery. It allows the author to play with the idea of fate and destiny. For example, a character might be constantly haunted by divination - related dreams, which could drive the plot forward as they try to figure out what these dreams mean.