It wasn't clear just how minimized Ray Fisher's role as Cyborg was in the Joss Whedon cut of Justice League until the Zack Snyder cut was released. In the original, Cyborg felt like he was just along for the ride, despite the fact he was made from one of the Mother Boxes that were part of the central conflict. In the Zack Snyder cut, not only is his character fully realised, but he's an integral part of the film's plot. Cyborg's story now feels like a parallel to what is happening with the formation of the Justice League, which is important to the character development of the group as a whole.
Ray Fisher is truly the heart and soul of Justice League and the Zack Snyder cut feels like a triumph for him. Knowing we likely won't get to see more of Fisher's Victor Stone is even more heartbreaking as he truly deserves a standalone film.