In some fanfiction, the Venom suit could give Spider - Man new abilities that he has to learn to use. Maybe he discovers he can create shadowy tendrils that can grab objects from a distance or form a protective shield. This could lead to him having to train in secret to master these powers without his friends finding out.
Another great storyline could involve the Venom suit changing Peter's personality in unexpected ways. He could become more aggressive and reckless, causing his relationships with Mary Jane and his aunt May to be strained. Meanwhile, he has to deal with a new super - villain who is using his changed behavior to their advantage.
One interesting storyline could be Venom teaming up with Spider - Man in a Homecoming - based setting. Maybe there's a new threat in the city that they both realize they need to face together. For example, a powerful criminal organization that's using advanced technology stolen from Stark Industries. Another could be a Venom - origin story set during the time frame of Homecoming, where the symbiote's arrival on Earth and its connection to Peter Parker's world is explored in a different way than in the official comics or movies.
Another storyline might involve Venom having to protect Spider Girl when she loses her powers temporarily. Venom, who is often seen as an anti - hero, has a chance to be a true hero in this situation. He uses his unique abilities to keep her safe from various threats that would normally be easy for Spider Girl to handle on her own.
One popular storyline is the struggle of Spider - Man against the symbiote's influence. In these fanfictions, he often has to fight his darker impulses while wearing the black suit. Another is his relationship with other characters like Mary Jane or Gwen Stacy while in the black suit, which can add new layers of drama.
I have no idea about this kind of fanfic. Maybe you can search on specific fanfiction platforms or communities to find the answer you're looking for.
One popular storyline is Venom teaming up with other villains. This creates a bigger threat for Spider - Man. Another is Venom trying to take over the city. His symbiotic powers give him an edge in such a plot.
One interesting storyline could be about Spider Man facing a new villain that was created specifically for the fanfiction. This villain might have powers that directly oppose Spider Man's, like the ability to nullify his spider - sense.
Often, in fanfiction, the Venom suit makes Spider - Man look more menacing. His eyes might turn a glowing white or red, and his body could be more muscular and bulkier. The suit itself may have a more textured, almost slimy look compared to his normal suit.
Well, a cool plot could be that there's a scientific experiment gone wrong that fuses Venom and Spider - Man's powers in an unexpected way. They have to figure out how to control these new combined abilities while also dealing with villains who want to steal their power source. Or perhaps Venom gets amnesia and Spider - Man has to convince him that they were once enemies but now need to work together. There could also be a story where Venom's offspring has a different relationship with Spider - Man, like it's more of an anti - hero sidekick.
Another interesting plot could be that a mad scientist creates a device that can separate Venom from his host. However, the separation goes wrong and the symbiote energy starts to spread across the city, infecting people. Spider - Man and Venom must work together to find a way to contain the energy and save the city.
One idea could be Venom and Spider - Man teaming up against a new, more powerful symbiote that threatens the city. They have to put aside their differences and use their combined powers to defeat it.