A decade ago, J.J. Abrams wrote the script for Superman: Flyby, a Superman origin movie that was to be directed by Brett Ratner or McG. Although this particular film was never made, with Warner Bros. instead producing Superman Returns, storyboard and concept art for the script exist, including a blow-by-blow of the final battle's aftermath.
There were plenty of oddball elements in Abrams' Superman script, including an early version in which Lex Luthor was a secret Kryptonian, and Superman dying, then meeting his father, Jor-El, in Kryptonian heaven. In this scene, however, storyboarded by Adolfo Martinez Perez for McG, we get the aftermath of a battle between Superman and his cousin Ty-Zor. In this version, Lex Luthor isn't a Kryptonian, but something wonky does happen to him upon Ty-Zor's death.
[via Comic Book Movie]
Incidentally, artist Phil Saunders has recently been posting concept artwork he created for Superman: Flyby, including some neat images of Ty-Zor's battle mech. The image up top is one of Saunders' concept designs.