One interesting plotline could be Deku having to face off against his classmates in a series of challenges that test not only their quirks but also their teamwork and strategic thinking. Maybe there's a misunderstanding that leads to the conflict.
Perhaps a plotline where Deku is being framed for something by an unknown enemy within Class 1A. As a result, he has to prove his innocence by competing against them in various battles. This would not only show his growth as a hero but also how much his classmates really know and trust him. Along the way, secrets might be revealed about each character's quirk and their true feelings towards Deku.
Deku himself is likely to shine. Given his powerful quirk and his growth throughout the main series, he'll surely put up a great fight against his classmates. Bakugo could also shine as he's always been in competition with Deku and has a very strong quirk.
One interesting plotline could be Anakin's struggle with his past self as Vader. Maybe in the fanfic, Anakin tries to prevent Vader from making the same mistakes he did, leading to intense battles of will and lightsaber duels.
In some fanfics, there might be a plotline where Palpatine tries to corrupt Anakin even further during the battle, using psychological warfare. Anakin, on the other hand, has to resist this while also fighting for his life. This adds a layer of psychological drama to the physical fight between them.
Well, perhaps there's a plotline where a group of plants form an alliance with a few intelligent zombies to fight against a common, greater evil in this 'plants vs zombies lemon fanfic'. This would be really cool as it goes against the normal plant - zombie enmity. They could combine their strengths, like the plants' defensive and offensive abilities with the zombies' knowledge of their own kind's weaknesses.
One interesting plotline could be a battle that takes place in an alternate universe where Anakin and Obi - Wan have different allegiances from the start. Maybe Anakin is a Sith Lord right from the beginning and Obi - Wan has to face his former apprentice in a more cut - throat battle.
Another possible plotline is that Dark Bowser is actually a part of Bowser that he has been suppressing. The fanfic could explore Bowser's internal struggle as he tries to come to terms with this darker side of himself. It could also show how this affects his relationships with other characters, like Princess Peach and his minions.
One interesting aspect could be the different interpretations of the characters' powers. In fanfiction, the author might explore new ways Deku uses his One for All ability against Overhaul's powers. It can also show different battle strategies that might not be in the original manga or anime.
In some fanfictions, the bullying of Bakugou by Class 1A might be a part of a bigger plot where there is an external force influencing the class's behavior. For example, a villain could be using some sort of mind - control or misinformation to turn the class against Bakugou. Bakugou, in this situation, would have to fight not only against the bullying but also against this external threat. As the story progresses, the class could break free from the influence and realize their unjust actions towards Bakugou, leading to a big reconciliation scene.
In this fanfic, it could be that Deku's quirk goes out of control during a training exercise. He loses the ability to contain his power and it ends up consuming him, resulting in his death. This would create a lot of self - reflection among the other students about the risks of their quirks and the importance of proper training and control.
One interesting plotline could be a friendly sparring match that turns into a real test of skills and teamwork for both RWBY and JNPR. Maybe there are unexpected alliances formed during the fight.