The rewriting of the myth banalizes the characters but emphazises the emotional power of the events : be present at a drama in the life of someone who looks like us seems to be more stronger than look at tragic heroes who would cross the sames dramas. The humanization of the characters heightens our empathy, and it's simply powerful !
Hope is what is left at the end, when everyone is equal before death, even if the balance of the world is disrupted on earth and values fall apart. This explains this quiet atmosphere during the play, giving it its rare magic, while exalting its message of love. This is why Satoshi Miyagi declares that it is not a “tragic and sad play, but a celebration to appease minds”.