The Theatrical Cut directed by Joss Whedon
Batman and Wonder Woman recruit The Flash, Aquaman, and Cyborg after the death of Superman to save the world from the catastrophic threat of Steppenwolf and his army of Parademons.
Add filmmakers and cast the films/shows/franchises (or concepts) that they were rumored, considered, offered, negotiated, turned down, and/or partially contributed before departing. (Please double-check in research.)