It could be amazing. Picture Naruto's ninjutsu skills combined with the Avengers' superpowers. Maybe Naruto could teach Hawkeye some new arrow - shooting techniques inspired by his shuriken skills. And Thor could show Naruto how to better control his chakra using the power of Mjolnir.
I think Naruto and Hulk would be an interesting pair. Naruto's positive energy and his ability to befriend almost anyone could have an impact on Hulk. Maybe he could help Bruce Banner control the Hulk better. And Hulk's raw strength combined with Naruto's strategic thinking in battle could make them a formidable team.
Well, a great plot could be that the Infinity Stones start to mess with the fabric of reality and it creates a portal between the Naruto universe and the Marvel universe. The Avengers and Naruto's friends end up in each other's worlds. Naruto and the Avengers have to work together to fix the portals and return everyone to their proper universes. Along the way, Naruto might have some epic battles with villains like Loki, using his ninja speed and strength. And the Avengers could learn a thing or two about chakra from Naruto and his friends.
Well, one possibility could be that Venom, being an anti - hero, is initially seen as a threat by the Avengers. But then they realize that there's a greater enemy that they both need to face. Maybe an alien force that is immune to the Avengers' usual attacks but Venom's symbiotic abilities can somehow counter. So, they reluctantly team up, with Venom constantly trying to assert his own way of doing things, leading to some interesting clashes and character development within the team - up.
A cool plot might be that the Tailed Beasts in the Naruto world are being targeted by an unknown force from the Marvel universe. The Avengers, thinking it could lead to a greater threat to both universes, come to help. Naruto and the Avengers have to work together to protect the Tailed Beasts. Hulk could have an interesting interaction with the Tailed Beasts, perhaps learning from them how to better control his rage, while the ninjas are amazed by Thor's lightning powers and try to incorporate some of that into their own jutsu.
Well, perhaps there's a threat that can only be defeated by combining the chakra in the Naruto world with the superpowers of the Avengers. For example, Thor's lightning could combine with Sasuke's lightning - based attacks. And Captain America's leadership could inspire Naruto to lead his own team in a new way. They all start off not trusting each other much, but as they face challenges together, they learn to work as one.
There's a fanfiction where Storm's weather - controlling abilities are crucial in an Avengers - level threat. The X - Men and Avengers have to work together to stop a global weather - based disaster. In some crossovers, Cyclops' optic blasts are combined with Hawkeye's archery skills in a strategic way. They create a unique combat style that helps the combined team take on enemies. Also, Rogue's power - absorbing ability can lead to some really interesting interactions when she absorbs the powers of various Avengers members.
One idea could be that Tony Stark tries to modernize Dunder Mifflin's technology. He'd be frustrated by the old - fashioned ways of the office. Another could be Thor working as a temp at the office and constantly getting into comical misunderstandings because of his Asgardian ways. Maybe Hulk could be the office's security guard, scaring off any unwanted visitors in a very Hulk - like manner.
A genetic experiment gone wrong could also be a great plot for the crossover. A mad scientist tries to combine mutant and super - soldier DNA. This creates a new breed of dangerous creatures. The X - Men, with their knowledge of mutants, and the Avengers, with their combat skills and high - tech resources, must work together to contain the threat. Jean Grey's telepathic powers could be crucial in finding the source of the experiment, while Iron Man uses his technology to develop a way to reverse the genetic changes.
One idea could be that Jinx somehow gets transported to the Naruto universe. She might initially be seen as a strange and powerful figure. Naruto, being the curious and friendly type, would approach her. Jinx could then start causing chaos in the Hidden Leaf Village, which Naruto has to deal with while also trying to understand her. And they could gradually form an unlikely friendship as they learn from each other's worlds.