Suggestions by @liampemberton

Pruitt Taylor Vince

as Pa Kent in Casting the entire DCU

Score: +9

Katheryn Winnick

as Black Canary in Casting the entire DCU

Score: +2

Matthew McConaughey

as Two Face in Casting the entire DCU

Score: +4

Karen Fukuhara

as Katana in Casting the entire DCU

Score: +4

Shaquille O'Neal

as Steel in Casting the entire DCU

Score: +2

Tom Felton

as John Constantine in Casting the entire DCU

Score: 0

Melissanthi Mahut

as Wonder Woman in Casting the entire DCU

Score: +9

Karima McAdams

as Wonder Woman in Casting the entire DCU

Score: -9

Millie Brady

as Wonder Woman in Casting the entire DCU

Score: -3

Marie Avgeropoulos

as Huntress in Casting the entire DCU

Score: +2

Meg Donnelly

as Stargirl in Casting the entire DCU

Score: +3

Peter Mensah

as Martian Manhunter in Casting the entire DCU

Score: +4

Olivia Holt

as Wonder Girl in Casting the entire DCU

Score: 0

Tim Robinson

as The Joker in Casting the entire DCU

Score: -6

Lili Reinhart

as Supergirl in Casting the entire DCU

Score: -2

Caleb McLaughlin

as Static in Casting the entire DCU

Score: +1

Glen Powell

as Booster Gold in Casting the entire DCU

Score: +6

Ryan Gosling

as Animal Man in Casting the entire DCU

Score: +3

Aaron Eckhart

as Alan Scott in Casting the entire DCU

Score: +5

Dua Lipa

as Zatanna Zatara in Casting the entire DCU

Score: +2