The cultural elements of the settings can also be combined. 'In the Heights' has a strong Latino culture, while 'Hamilton' is steeped in American colonial and revolutionary culture. There could be a celebration in the crossover where both cultures are showcased. Characters could learn about each other's traditions, like the characters from 'Hamilton' learning the significance of the Dominican Independence Day parade in 'In the Heights', and the 'In the Heights' characters learning about the Fourth of July celebrations in 'Hamilton'.
One interesting plot idea could be a character from 'In the Heights' getting transported to the world of 'Hamilton'. They could interact with the historical figures in 'Hamilton' in a modern and unique way. For example, Usnavi could meet Alexander Hamilton and they could exchange ideas about building a better future for their communities. Maybe Usnavi could introduce Hamilton to the concept of a tight - knit neighborhood like in 'In the Heights' and how it can be a force for positive change.
The colorful and magical world of Equestria from MLP could be juxtaposed with the spooky and mysterious Gravity Falls. You could have parts of Gravity Falls, like the Mystery Shack, appear in Equestria. Maybe the ponies think it's a new kind of magical building. Or, have the Gravity Falls forest start to show up in Equestria, with its strange creatures and anomalies.
Well, for starters, you can give the Battle Royale characters some of the abilities or traits from the Akira characters. For instance, make one of them have a bit of Tetsuo's instability and power - hunger. Or you could have an Akira character thrown into the Battle Royale situation and see how they use their psychic powers to survive. Maybe they use it to form alliances or to take out threats from a distance.
Well, a popular setting for crossover fanfiction could be a historical period. This throws characters from different stories into a past era, creating interesting dynamics and conflicts. Also, the sci-fi universe is often chosen, where advanced technologies and alien worlds provide a backdrop for unexpected encounters between characters.
The settings can be combined by having Naruto characters appear in Eorzea. For example, the Hidden Leaf Village could be magically transported to a corner of Eorzea. The lush forests of the village could contrast with the more varied terrains of Eorzea like the deserts and mountains. Another way is to have areas in Naruto, such as the Valley of the End, take on some of the magical properties of Final Fantasy 14. Maybe there are floating crystals or strange magical auras in the Valley of the End now.
One way to combine the settings is to have a portal open between Westeros and Middle - earth. Maybe a powerful wizard in 'Lotr' accidentally creates a gateway while experimenting with magic. Through this portal, characters from both worlds can pass and interact. For example, Aragorn could enter Westeros and help in the fight against the White Walkers, or Tyrion Lannister could end up in Minas Tirith and use his wits to deal with the politics there.
The settings can be combined by having the hidden villages from Naruto be located in different parts of Spira. For example, Konoha could be in the middle of a forested area similar to Macalania Woods. The temples in Final Fantasy X - 2 could also serve as important locations in the Naruto - Final Fantasy X - 2 combined world. They could be places where chakra or magic is especially strong.
One challenge is getting the characterizations right. Hamilton characters have very distinct personalities based on the musical and historical facts, and Hetalia characters are also quite unique in their nation - personification concept. Balancing both can be tough.
The world - building in 'Hamilton' crossover fanfiction is really engaging. When 'Hamilton' is crossed with a science - fiction world, like 'Star Trek', the new setting forces the characters to adapt. Their values and goals might change as they encounter new technologies and alien races. Also, the way relationships are formed or changed. In a 'Hamilton' and 'Romeo and Juliet' crossover, the love - hate relationships can be re - defined in different ways compared to the original stories.
There's this 'Hamilton' and 'Pride and Prejudice' crossover. In it, the prideful Darcy character is somewhat like some of the more haughty characters in 'Hamilton', and the Elizabeth Bennet character has some really fun exchanges with Eliza Hamilton. It's a really charming take on bringing these two very different worlds together. Also, the fanfiction 'Hamilton Meets Sherlock' is quite good. It has Hamilton using his wits much like Sherlock Holmes, and they team up to solve mysteries in an alternate London.