I know whatever plans they had for Leia and Ben had to be stopped after Carrie's untimely passing.
But if the Original Trilogy was about the sins of the father(prequels about his literal sins) and the son trying to save him.
The Sequels should have been about the mother's failure and the son coming home.
It should have been the antithesis of Anakin leaving Shmi with it ending with Ben coming home and embracing Leia over the dark side.