My rewrites of DC media continuities – 1-2

Arrowverse

Arrow

• Oliver does not end up with Felicity at all.
• Laurel's full name is Dinah Laurel Lance but prefers being called by her middle name instead along with being more like her Earth-2 counterpart.
• Sin (as played by Bex Taylor-Klaus before her star making role in Scream: The TV Series and later Voltron: Legendary Defender) would instead be split into two with Taylor-Klaus' character renamed as Alexis and Sin being more like her comic book counterpart (Asian American girl who later becomes the adopted daughter of Black Canary).
• Mia Smoak is instead renamed Mia Dearden (due to the fact that she is named after the second Speedy) and is Oliver and Thea's maternal cousin than Oliver and Felicity's future daughter.
• Oliver's son William is renamed back to his comic book character Connor Hawke (which means John and Lyla's son John Jr does not even use the name at all).

The Flash

• Savitar isn't Barry's alternate future self, but Malcolm Allen, who is Earth-2 Barry's twin brother.

Constantine

• Not much aside from that, but Swamp Thing does appear as a recurring character.

Supergirl

• Kara does not end up with Mon-El.
• That being said, Linda Danvers is Indigo's human identity after she joins the Outsiders instead of her fate in the end of season 1.

Legends of Tomorrow

• Not much for the time being.

Lucifer

• Not much to change, except John Constantine would recur in this series.

Black Lightning

• Would spinoff into the Outsiders.

Batwoman

• Not much due to the show's currently in its first season but I would tone down the divisive aspects as in pandering towards PC culture.
• Renee Montoya would recur, as a possible love interest to Kate.
• Barbara Gordon would recur, as Batgirl first, then Oracle, which would lead to a Birds of Prey series (renamed version of Green Arrow and the Canaries).

DC Extended Universe

Man of Steel

• Zod is trapped into the Phantom Zone instead of his neck snapped by Clark in the end.

Batman V Superman: Dawn of Justice

• Lex Luthor is played by Corey Stoll instead of Jesse Eisenberg.

Suicide Squad

• The Joker is played by Bill Skarsgaard instead of Jared Leto.

Wonder Woman

• Not much to change.

Justice League

• Darkseid appears in person.

Aquaman

• Not much to change.

Shazam

• Mary is Billy's biological sister like in pre-New 52.

Harley Quinn: Birds of Prey

• The titular team would have a larger role than in the third act.
• Cassandra Cain is more like her comic book counterpart