He could develop the ability to combine his chakra with his Spider - Man powers. For example, he could infuse his webs with chakra to make them stronger or even give them different properties like being able to cut through objects. Another new ability could be using his shadow clones in combination with his Spider - Man agility. He could send clones to different locations while swinging around with his webs, creating a more complex battle strategy.
Well, in SI fanfics about Spider - Man powers, often we see the exploration of his spider - sense. It could be made more acute or perhaps have some new features added. And his web - slinging is another cool power. Some fanfictions might have him create new types of webs with different properties, like electrically charged webs for combatting enemies.
Some fanfictions give Spider - Man the power to heal himself much faster. This means that even after a really tough fight, he can get back on his feet in no time. In addition, he might have the power to fly using his webs in a more efficient way, like creating a sort of web - glider that can carry him long distances. There could also be a power where he can project his thoughts into the minds of others, which would be useful for both communication and misdirection.
His sense of humor might change. While he still has his quippy nature, it could be more cosmic - themed. For example, he might make jokes about black holes or alien cultures. His empathy could also expand as he meets different beings from across the universe and understands their plights.
His spider - sense would be a very useful power in the MHA universe. Given that many battles in MHA involve sudden attacks and surprises, Spider - Man's ability to sense danger before it happens would give him an edge. He could use this to warn his MHA allies and prevent ambushes. Also, his super strength would make him a formidable force against the powerful villains in the MHA world. He could hold his own against even the strongest quirks, like All - Might's strength - based quirk.
Many fanfics emphasize his more aggressive use of the webbing. Instead of just using it to swing or capture villains like Peter Parker, he uses it to constrict and even harm villains more severely. He might web a villain's limbs together in a way that causes real pain, showing his different moral compass when it comes to fighting crime.
She could have the same powers as Spider - Man, like super strength, agility, and the ability to stick to walls. But maybe her web - slinging is a bit different, like she can create different types of webs, perhaps ones that are stronger or have special properties.
The interaction of their powers would be fascinating. Harry's magic could be used to heal Spider - Man if he gets injured during a fight. Spider - Man's Spider - Sense could alert Harry of any oncoming danger, even magical threats that Harry might not be aware of immediately. Also, Harry could use spells to create distractions while Spider - Man uses his stealth to approach enemies unnoticed. This synergy between magic and superhuman abilities would create a very unique and exciting dynamic in the fanfiction.
Their powers could combine in a way that Naruto's chakra enhances Spider - Man 2099's physical abilities. For example, his strength and speed could be increased even more. Also, Spider - Man 2099 could use Naruto's shadow clone technique to create multiple copies of himself to confuse enemies while swinging around on his webs.
In some SI fanfictions, Spider - Man's power of web - slinging is given a new dimension. Instead of just using it for swinging around, he can use it to create complex structures for trapping enemies or even as a means of long - distance communication by vibrating the webs in a certain pattern. His super strength is also sometimes depicted as being variable, depending on his emotional state, which is an interesting take.