Another plot could be that Spider - Man loses his memory and has to rediscover who he is while still trying to protect the city. This would put him in a vulnerable position and force him to rely on his friends and allies in new ways.
Maybe a plot where Spider - Man has to face an alien invasion in the context of the 2017 cartoon. The aliens could have unique powers that his usual foes don't, forcing him to adapt his fighting style. He might also have to team up with some of his rogues' gallery who are also threatened by the invasion. This would create an interesting dynamic as they have to put aside their differences to save the city and the world.
Perhaps in the fanfiction, Otto Octavius starts mentoring a young scientist. This could lead to him reflecting on his own actions and past mistakes. He could also be involved in a plot where he has to protect his new protégé from other villains in the Spider - Man universe. And it would be interesting to see how his relationship with Spider - Man evolves as he takes on this new role.
One idea could be that Captain Marvel and Spider - Man team up to stop a powerful alien threat that's immune to most of Earth's defenses. They'd have to combine their unique powers. Captain Marvel's energy - based attacks and flight, along with Spider - Man's agility and web - slinging skills, would make for an exciting battle.
One idea could be a crossover with the X - Men. Spider - Man could team up with Wolverine to take on a common enemy like Magneto. Wolverine's tough and no - nonsense attitude would contrast well with Spider - Man's quippy nature.
One idea could be to explore what would happen if Spider - Man had to team up with his greatest enemies to face an even greater threat. For example, teaming up with Doctor Octopus and Green Goblin against an alien invasion. This would create a lot of interesting character dynamics as they have to put aside their differences.
Well, a common plot in Spider - Man Marvel crossover fanfiction is when he crosses paths with the Avengers during a big city - wide disaster. He might initially be seen as an outsider by some of the Avengers, but then he proves his worth. Another idea is a crossover with Black Panther. Spider - Man could visit Wakanda and get involved in some sort of high - tech and ancient magic - related adventure there. And of course, there could be a plot where he meets the Fantastic Four and they all collaborate on a scientific mystery that has super - powered implications.
One idea could be exploring the different Spider - People's home universes in more detail. For example, showing what Miles Morales' daily life in his universe was like before becoming Spider - Man. Another could be a team - up between Miles and an older, more experienced Spider - Person from a different universe to face a new and powerful villain.
Perhaps there's a fanfiction where Spider Man and Spider Gwen accidentally swap powers. They have to learn how to use each other's abilities to fight crime. This would lead to some really funny and also challenging situations as they get used to different ways of web - slinging and sensing danger.
One plot idea could be that Spider Man and Spider Woman team up to fight a new supervillain who has the power to manipulate time. They have to figure out how to work together while also dealing with the chaos the villain is causing in different timelines. Another could be a story where they get trapped in an alternate dimension and have to find a way back home while facing strange new enemies. Maybe there's a plot where they start to have feelings for each other but are afraid it will interfere with their superhero duties.
Maybe in the fanfiction, Spider - Gwen gets lost in the future where Spider - Man 2099 exists. He has to help her get back to her own time while also protecting his own version of New York from the chaos her presence might bring. They could learn from each other's fighting styles and develop a unique bond in the process.