I thought they were going to do a Grey Jedi thing where she embraced the light and the dark. Just from watching The Last Jedi. But that is not what Lucas meant by balance of the force. It wasn’t Yin and Yang equal light and equal darkness, except maybe in Filoni’s mortis.

Balance meant Anakin killing Sidious. and ending the Sith menace. With his and his master’s death. Balance restored would be Luke restoring the Jedi, and Leia restoring the Republic as Chancellor.

I don’t see how it even would work out in George’s idea. Maul being the new Big bad that means the Sith and Empire threat remains. Maul ruling with Talon by his side the Imperial Remnant or criminal underworld whatever it was. Means the rule of two endured.