Cinderella

Original version: Cinderella's stepsisters chop off their toes and forced their feet to fit the shoes, but the prince saw the deed. Then in the end, their eyes got pecked by birds (which were Cinderella's friends)

Snow White

Original: The prince who found her did not kiss her, but he brought her home to either put her on display or... something rated. She woke up in the middle of their way. At their wedding, the witch who had tried to kill her was invited and forced to danced in red hot shoes to death.

Rapunzel

Original: When the witch who trap Rapunzel in the tower found out that she had met a prince, she bansihed her and pushed the prince off the tower so he fell and became blind of thorns which pirced his eyes. He eventually met Rapunzel in the middle of forest and his sight restores by her tears.

Sleeping Beauty

Original: In her sleep, a king found her and her. With the help of fairies, she gave birth to two children. One of them was her finger and she woke up from the curse. The king asked her to marry him but his wife got jealous; she planned to kidnap the sleeping beauty and cook her for the king to eat. But eventually the kind murdered her; his own wife, by burning her alive.

Little Red Riding Hood

Original: A version said she simply believe the wolf, stripped herself, and got eaten; no miracle involved. Other version said she cooked her own grandma and placed her blood in a wine bottle--with the help of her wolfish friend here. The creator of this story is actually gives us rhyming that "Not all wolves and wild beasts--some seduces with gentleness, sneak into our beds, and gets us there."

I would love to read/write fanfics based on these.

And no, don't tell me to write one. I'll write it if I really want to.