You could start with the color palette. In 'The Dark Knight', there are a lot of dark and moody tones. In a Star Wars fanfic, you could describe planets or spaceships with similar color schemes. For example, a Sith - occupied planet could be a dark, gloomy place with a lot of blacks and grays, like Gotham in 'The Dark Knight'. Also, the way characters are dressed. Stormtroopers could be given a more 'Dark Knight' - like look, with some added leather or more menacing - looking armor.
One idea could be a crossover where the Jedi from Star Wars encounter the moral dilemmas similar to those in The Dark Knight. For example, a Jedi might face the choice of using a dark side power to save many, like Batman's tough decisions. Another could be a Sith lord with the Joker's chaotic nature, causing havoc in the Star Wars universe. Maybe a young padawan is influenced by this Sith - Joker figure and has to struggle between the light and dark within himself, just as characters in The Dark Knight trilogy often struggle with their own morality.
Power and its corrupting influence is another theme. The Emperor's thirst for power in Star Wars and the various power - hungry criminals in Gotham. Fanfiction might explore how characters from one universe would react to the power dynamics in the other. For example, would Batman be able to resist the allure of the Dark Side if he were exposed to the Force?
Another aspect to consider is that the 'Dark Father' could be a metaphorical concept in the fanfic. It could represent the dark influence that pervades the Star Wars universe, like the overarching power of the Dark Side. This could be personified as a father - like entity that is constantly pulling characters towards the path of darkness.
It might be an entirely new character made up for the fanfic. This character could be a powerful Sith Lord who has a family or is in a father - like role to other Sith. He would be a source of dark power and influence within the story.
One way to merge the two universes in fanfiction could be through a plot device like a dimensional rift. For example, a Sith Lord could accidentally open a rift that leads to Gotham City. This would bring the dark and brooding atmosphere of The Dark Knight into the Star Wars universe. Batman might find himself in a world of lightsabers and the Force, and his detective skills could be put to the test in a whole new way.
There could be a fanfic where an ancient Dark Side artifact is discovered near the Ghost. The crew decides to study it, not realizing the danger. As they do, the Dark Side energy starts to affect the ship itself. Systems malfunction, and strange things start to happen. Kanan, with his Jedi knowledge, tries to figure out how to neutralize the artifact and save the Ghost from being consumed by the Dark Side.
No, in the literal sense, it's not normal because Star Wars is a fictional entity and doesn't have the ability to watch. But if we consider it in a more abstract way, it can be seen as normal in the context of how the official franchise might be influenced by the creativity in fanfic.
In the Star Wars Jedi Knight Academy story, the main character embarks on an exciting adventure. They start as a novice with potential in the Force. Throughout the story, they are taught by experienced Jedi Masters. There are missions that test their skills, from simple tasks like helping out in the Jedi Temple to more dangerous ones like infiltrating Sith strongholds. Along the way, they make friends and allies, and they must also learn to control their emotions, as the Force is strong in them.
Since the game isn't out, we can only speculate. Maybe it will continue the story of the first game, following the journey of a Jedi Knight in training, facing new threats in the Star Wars universe like perhaps a new Sith Lord emerging or some ancient dark side force awakening. But again, this is all just speculation.