In Stark fanfiction, magic can often be a hidden or emerging power. It might manifest in a Stark's dreams, like premonitions similar to Bran's warging abilities. For example, a fanfic could have Sansa Stark developing a magical connection to the old gods, allowing her to foresee threats to Winterfell.
Magic in Stark fanfiction can also be a means of resurrection or protection. Maybe a Stark is brought back from the brink of death using some form of magic. It could be tied to the ancient magic of the North. For instance, Arya Stark might be protected by a magical charm that hides her from the White Walkers.
It can also be a place of magic and mystery. In many fanfictions, the Godswoods are the source of strange and powerful forces. Writers might create new creatures or powers that are linked to the ancient trees and the old gods worshiped there. For example, there could be a magical well in the Godswoods that has the power to heal any wound, but only if the person is pure of heart. This adds an element of fantasy and intrigue to the already rich world of Game of Thrones.
Sansa's character development in fanfiction varies from the show. In the show, her development was a gradual process that sometimes felt rushed. In fanfiction, authors can take their time to really flesh out her growth. They can explore her internal thoughts and feelings more deeply. For instance, when she was dealing with the trauma of her experiences, fanfiction can go into greater detail about how she overcame it and how it shaped her into the person she becomes, rather than just showing the end result as the show sometimes did.
In the case of Varys, being a eunuch affected how others perceived him. This led him to develop a very shrewd and calculating personality. He had to rely on his wits and intelligence rather than physical strength or family connections. His castration was a driving force behind his rise to power in the political intrigue of Westeros, as he had to find other ways to assert himself.
The Blackfyre family in fanfics can also be a symbol of lost glory and a catalyst for change. Some fanfics might depict a Blackfyre heir who has been in exile for years, coming back with new ideas and a different perspective on ruling. This heir could try to unite the fractured kingdoms under the Blackfyre banner, which is a very different approach compared to the power struggles we see in the original series. This can lead to interesting character interactions and plot developments as other houses either support or oppose this new movement.
A female Stark OC could play the role of a peacemaker. For instance, if there are disputes between different Stark siblings or between the Starks and other houses. She could use her diplomatic skills, which she might have learned from observing her father. Her calming presence and ability to see different perspectives would help in resolving conflicts.
In fanfiction, Tony Stark's smile can be a plot device. It might signal to other characters that he's up to something. For example, his sly smile could mean he has a clever strategy in mind.
One unique element could be Stark - specific magic spells. For example, a spell that only a Stark can cast related to the cold and ice of the North. It might be used to freeze an enemy's weapon or create an ice shield.
Often in fanfiction, Jon Stark is given more emotional depth. He may struggle with the weight of his name and the expectations that come with it. This internal struggle can lead to him making different choices. He could decide to abandon the Stark name for a while to find his own identity, and then come back to it with a new understanding of what it means to be a Stark. This journey of self - discovery is a major aspect of his character development in many fanfictions.
Nebula can play the role of a catalyst. Her presence can push Tony to expand his thinking beyond Earth - bound problems. For example, if there's a story about Tony developing new space - friendly technology, Nebula's knowledge of different alien cultures and technology could be the trigger that sets him on that path.
Rome could play the role of a mysterious foreign power. It might send envoys to the Seven Kingdoms to form alliances or gather information. This would add an extra layer of diplomatic intrigue to the story.