5) Under The Red Hood Adaptation
There are many adaptations that would be well-suited to The Batman, but Under the Red Hood seems like the most obvious choice overall. BvS showed the burned Robin suit (with the Joker’s spray-painted taunt on it), and Suicide Squad brought up Harley Quinn’s connection to the murder of Robin. It’s clear, then, that the character is most definitely relevant in this universe, and an adaptation of the aforementioned graphic novel would surely please fans.
Not only does UTRH fit the likely grittier tone that Matt Reeves is known for, but it would expand the DCEU to incorporate some notable personalities like the titular character, Ra’s al Ghul, Black Mask and more. However, the focus of Red Hood isn’t in its bevy of familiar faces, but its emotional core. The heart that reveals itself throughout the plot gives the action weight and the characters necessary depth.
As previously mentioned, Robin doesn’t have a great reputation with live-action interpretations. But through the use of a storyline centered around him, he can receive something of a rebirth in popularity among fans who wish to see the character done justice.