With Epic: The Musical coming to an end, I'd like to pitch my idea for a similar project called Legend: the Musical, based on the life of Herakles.
The basic plot is that it follows the life of Heracles through his birth, tragic family life, twelve Labors, and his ascension to Godhood with some deviations from the original myth not dissimilar from how Epic did it.
The biggest change, is that it will also be told through the point of view of Hebe, Goddess of Youth who eventually ends up married to Herakles. In the musical, she's Hera's handmaiden after she took her in when she was orphaned during the Titan War. Hebe falls in love with Herakles early on, but she doesn't get near him because she knows every time mortals love Gods it always ends tragically for the mortal. She says as much in her song, "From Afar".
A motif that would run through the musical is that of the serpent. For context: the first song in the musical would be "Serpent in the Cradle", that describes Herakles choking two Serpents to death as a baby, but his own mother Alkmene calls HIM the Serpent in the Cradle.
Throughout the play whenever Herakles is at his lowest, he gets reminded of how he is the Serpent in the Cradle. A poison that hurts everything he loves. A thing that should not exist.
The bid turning point in the musical would be the death of Herakles' wife and kids, where Hera infects him with madness and compels him to kill them. Hebe saves his life by descending from Olympus and giving the message that Herakles wasn't at fault, but she can't betray Hera's confidences so she can't say who did it. Nevertheless, Herakles gets assigned the Twelve Labors instead of Execution, and Hebe helps him however she can.
During the LAbors, Herakles and Hebe fall in love, but Herakles stays away, believing he is the Serpent in the Cradle and will bring ruin to her, echoing Hebe's song "From Afar" and it's all tragic and sad.
There's more too it, obviously, but if you'd like to hear more let me know.