Thinking of doing Aurora / Sleeping Beauty next.
While I'm planning that story (which involves an indeed-poisoned needle and an ancient prophecy), let's go through what I'm thinking to do for the de-mythologized Disney Princesses.
Snow White's 7 dwarfs are implied to be early hominids, but otherwise the story remains the same. May draw inspiration from the "natural poison / carbon antidote" shown in
this Film Theory episode.
Ariel, the
Little Mermaid, is drastically changed and explores the dynamics between humanity (the Italian city states, following the recent theories about the film taking place in the Mediterranean) and the mermaids (ruled by king Triton). Along the way, a third party (Ursula) manipulates them into fighting against each other (could be done by use of her human form).
The
Beast is a werewolf, with his story remaining the same as in the film. Human by day, but monstrous at night (although retaining some of his human attributes, he is more aggressive) Now having learned humility, he seeks a solution in
Belle, a new girl who came to his castle. Also involves some wolfsbane in Belle's town, which needs to be infused into the Beast's blood to cure him, and a werewolf hunter (Gaston) who seeks to kill the Beast once and for all.
Aladdin is set in the early modern Ottoman Empire, with the only magical elements being sorcery, the flying carpet, and most important of all, the Djinn lamp. Otherwise, remains true to that time.
Pocahontas is a tale about the early colonization of the Americas, and a brave girl (Matoaka / Pocahontas) who stood up for the Powhatan tribes in Virginia during the foundation of the town of Jamestown. No happy ending, as while the film ends with a stalemate with the English, an epilogue title shows what really happened afterwards: she was captured by the English then brought to London.
Mulan maintains the fantastical elements, but keeps the rest accurate to the Northern Wei period when the original Hua Mulan was told. Somewhat. (Will probably have a major nomadic tribe group raiding China for the sake of story)
The Princess and the Frog remains the same as OTL.
Tangled follows a different story, which connects it to
Frozen and
Frozen II. This would lead to the trio being called the Arendelle Trilogy. Long ago, a drop of sun fell from the sky and inhabited a flower in Norway, near Nærøyfjord, which is settled by the Norsemen and named Arundel. Centuries pass, and the townspeople use the magical abilities of the flower for their own needs (revealed in Frozen), resulting in a German aristocrat named Gothel von Koehler getting her hands on a petal of the flower and using it to maintain her youth for decades. Gone mad over the flower's effectiveness (but not due to the flower itself), she abducts a girl named Rapunzel from a random German small state and hides out in a cliff to avoid being hunted down by the HRE's forces.
Rapunzel is raised by Gothel, who also slowly feeds her the flower, granting her magical abilities, including rapid regeneration; all of this is granted by her long hair.
Then a guy named Flynn arrives, and Rapunzel's desire to go outside conflicts with her mother's desires. She ventures out of her tower for the first time in 18 years, and the movie is largely the same from there. Rapunzel cuts her long hair, which causes Gothel to age rapidly and die as she is sapped of the flower's ability; this costs her the power the flower brought. Able to finally go without Gothel's invasive presence in her life, she takes steps to reconcile with her long lost family.
Frozen follows the booming Norwegian town of Arundel in the 1840s, and the story of 2 sisters: Anna (normal) and Elsa (granted powers by the flower). Since Elsa usually liked to play in the cold, her powers manifested as snow and ice. She keeps her powers secret to a bunch of foreign visitors, but accidentally unveils them on the night of her coronation, so she flees to a remote area deeper into Norway's glaciers. With this ability finally revealed to the world, Elsa isolates herself further, and under stress, unleashes a massive ice storm that ravages the European states.
Now that there's a powerful sorceress who has incredible feats and can freeze Europe and maybe the world, Europe (and Norway) turns on Arundel, and the town is sieged. Elsa is eventually captured and refuses to cooperate, but with the help of Kristoff, Anna gets through to her before the German prince Hans manages to kill Elsa. With Elsa now calmed at last, Arundel seeks to change their reputation as the most dangerous city in Europe...
Frozen II reveals how Arundel has changed. Arundel is now occupied jointly by the British, Germans, Danish, and Norwegians, and Elsa is stuck in a European prison. But when a voice begins to call out to Elsa and the people of Arundel, Anna realizes that they have to go back to their mystical past to unlock its mystery and reconcile it with the present.
This film also reveals the link to Tangled, with Rapunzel being a supporting character who also goes on the search of the Flower along with Anna, a released Elsa, and other European explorers. The Northuldra, here an indigenous Norwegian people, feature massively in the plot, and they're revealed to have been the first caretakers of the Flower before the Norsemen came.
Brave is backdropped in the English occupation of Scotland and its rebellion, with its plot otherwise being the same. It also removes the references to other Pixar films, which means that it won't be part of the Pixar Universe theory. The rest of the Pixar films, however, still uphold the theory even more than OTL.
Moana remains the same as OTL.