Dark Knight Lost Part One

I am working on my own version of "Crisis On Infinite Earths". Before starting that, I've decided to make some changes and introduce new characters from the DC TV Universe. This will involve altering the ending of Supergirl 5x08 and including NBC's unaired Wonder Woman and CBS's Justice League Of America TV Film. I will explain the reasons for Earth-1's Bruce Wayne disappearance, Kara and Lena's reunion, why Wonder Woman was absent, Constantine's Liv Aberdine, and more.