There are numerous potential plotlines. For example, a story could focus on how Emmett and Jasper's relationship with their 'mother' figure (if there is one in the fanfiction) changes because of their new connection to Edward. Another could be a coming - of - age type of plot where they struggle to find their place in the family while also dealing with the challenges of being vampires. There could also be a plotline where they discover secrets about their new family heritage that Edward has been hiding. This could lead to a rift or a stronger bond between them, depending on how the story unfolds.
Yes, it can be a somewhat common trope. In many 'Twilight' - inspired fanfictions, authors like to play around with family relationships. This alteration can lead to interesting new storylines, exploring different dynamics between the characters. For example, it might change how they interact within the Cullen family and how they view their roles in relation to each other and the rest of the vampire world.
There could be a plot where Edward has to protect them from vampire hunters. Since he is their father, he would be extra vigilant.
In some fanfictions, they might be portrayed as Edward's sons for the sake of creating unique family dynamics or exploring different storylines. However, this is not part of the original canon.
A plotline might involve Bella having to choose between different aspects of her relationships with Jasper and Emmett. For example, Jasper could offer her a more cerebral and controlled relationship, while Emmett might represent a more passionate and physical connection. Also, they could all be on a journey to discover more about the origin of their unusual mating bond.
One interesting fanfiction could be about an alternate universe where Bella has to choose between Edward and Jasper in a more complex situation involving Emmett as a mediator. In such a story, the dynamics between the characters can be explored in depth, with their different personalities and abilities coming into play.
A possible plotline could be that Bella's new status as Emmett's sister makes her more confident in the vampire world. Since Emmett is a strong and outgoing vampire, he might teach Bella how to better use her vampire abilities if she were to become one in the story. This could lead to her getting involved in more dangerous situations but also growing as a character.
The fanfiction 'Among the Coven' is also great. It delves deep into the life within the coven that includes Edward, Emmett, and Jasper, and how Bella fits into this world. It has great character development and the plot keeps you hooked from start to finish.
A plotline could involve Bella's family's reaction to her relationship with Emmett. Given her blindness, they might be even more worried about her getting involved with someone like Emmett. Also, the fanfiction could show how Bella and Emmett communicate on a deeper level. Since she can't see, they might develop a stronger telepathic or emotional connection that is unique to their relationship.
One possible reason could be that Bella discovers a different side of Jasper that she finds more appealing. Maybe Jasper shows a deeper understanding of her in some aspects that Edward lacks. For example, Jasper's past experiences might make him more empathetic towards Bella's own struggles in a way that Edward, with his own set of vampire characteristics, doesn't quite get.
Jasper would probably be more responsible. He has a more calm and collected nature. He's used to thinking things through and controlling situations, which would be really useful when babysitting. For example, he would be the one to make sure Bella eats her meals on time and goes to bed at a proper hour.