Hawk And Dove
Let’s be real. Sam and Dean Winchester are basically superheroes and Supernatural still remains an incredibly popular show even though it’s been on for what seems like forever now. If they wanted to, The CW could try to replicate that brotherly bond that’s made Supernatural so successful, but just infuse that into a new superhero show. And a perfect pair for this type of series would be Hank and Don Hall, otherwise known as Hawk and Dove.
Granted their powers by the lords of Chaos and Order, Hawk and Dove work together to fight crime even though their ideologies vastly differ from one another. Hank Hill (Hawk) is more forceful and aggressive in his fighting, while Don Hall (Dove) is usually driven by reason and nonviolence. The two clashing personalities could drive a potential CW series and explore what it truly means to be a hero better than any current show in the Arrowverse.