A plot could involve the Avengers traveling to different dimensions through the disks and having to team up with alternate versions of themselves to defeat a common enemy. This would bring in a lot of interesting character interactions and new power combinations.
One idea could be exploring what if a minor character from the movie got the Infinity Stones instead. For example, a random Asgardian warrior. They might use the power in a completely different way, perhaps trying to restore Asgard rather than the more universal aims Thanos had.
A fanfiction could focus on a young, unknown character who discovers a rare and powerful disk. This character then teams up with the Marvel heroes to learn how to use it properly and to help in their battles. For example, they might have to face off against an old enemy who has returned stronger than ever.
One idea could be a new character joining the Avengers. For example, a young mutant with the power to control time. This character could accidentally disrupt the timeline while trying to prove themselves to the team, leading to all sorts of chaos and adventures as the Avengers try to fix it.
One idea could be that the Avengers discover a new form of happiness that is not based on victory but on self - discovery. They each go on a journey to find what truly makes them happy outside of their superhero personas.
A great Disk Wars Avengers fanfiction idea might involve a young, new character who discovers a special disk that has the power to summon the Avengers. But this disk also attracts the attention of evil forces. So, the young character has to learn how to work with the Avengers and protect the disk from falling into the wrong hands. The story could explore themes of friendship, courage, and growing up while also incorporating the unique elements of Disk Wars.
One idea could be to cross the Avengers with the characters from Harry Potter. Imagine Iron Man trying to figure out how to use a magic wand, or Thor comparing his hammer to a magic broomstick. Another idea is to crossover with the Star Wars universe. Captain America leading the Rebel Alliance against the Empire would be really cool.
Howard the Duck. It would be really unexpected. He could bring some comical relief but also have some hidden knowledge about the disks that could be crucial. For instance, he might know of a weakness in a powerful enemy's disk - based powers.
A great plot for Kaiju Wars fanfiction could be centered around a team of international soldiers who are specially trained to fight the Kaiju. They could have different skills and weapons from various countries. The story could follow their adventures as they face off against different types of Kaiju in different locations around the world. There could be internal conflicts within the team as well, such as cultural differences and different fighting styles. And perhaps they encounter a Kaiju that is much more intelligent than the others, which forces them to come up with new strategies.
One idea could be exploring the backstories of the Mandalorian warriors. For example, how they were trained and what their family lives were like before the wars.
One idea could be exploring a side character's backstory in the Hurricane Wars universe. For example, a minor soldier who has a unique family history that ties into the overarching conflict. Another could be a what - if scenario, like what if the two main sides had formed an alliance earlier. Or perhaps a story about a character who discovers a hidden power that could change the course of the wars.