Deadman: Boston Brand, unlike the vast majority of superhumans in the wonderful world of DC, is a dead man walking. Quite literally. He was a trapeze artist before being killed by a mysterious figure known only as "the Hook", and becomes a spectre - locked between the afterlife and the real world, and having lost the ability to interact with the real world except through the bodies of other people.
I think the concept of Deadman would be so inherently unique compared to any other DC hero that he'd be interesting to delve into. Aside from Wonder Woman, we haven't seen much of DC's magical side in modern film (Constantine comes to mind, but that was some time ago.) The idea of us following Brand as he tries to define his role in the world now that he's technically no longer
of it seems like a really gripping hook, and a much more personal tale than most superhero media would allow.
The Question: I picture this as a neo-noir conspiracy thriller more than a gritty superhero drama. Imagine a show that properly delves into the scum of a wretched place like Hub City, probably the only place more utterly depraved than Gotham. It's not just the people on the streets, but the criminal syndicates and the twisted power system there that needs tearing down. And Victor Sage, the faceless man, is the only one with the gall to ask the right questions to do it.
Bearing in mind that Sage, out of costume, is an outspoken journalist, and in costume, is seen as a violent vigilante, as well as being able to properly delve into political conspiracies whilst keeping a cool head and knowing who to ask and what arms to twist, following the threads of a mystery (ideally shot in black and white with particularly strong lighting for that wonderful cinematic flair) from the dark, dingy streets of the city right to the gleaming spires of deceit that stand high above it, Question would have so, so much potential in a serial format.
Rocket Red is an interesting case, because it's less of a single character we'd follow and more of an army. It's very rare we see the USSR from the perspective of those who fight for it - and I think that the Rocket Red Brigade would give us a very unique insight on the Cold War in a world filled with superhumans. Whilst Rocket Red is best known for featuring in the Justice League International books, I think the role of the group as a whole could bring a potentially very interesting vibe - as well as acting as a much more unique way of kickstarting a potential JLI series down the line.
Not only this, but their very creation is incredibly interesting. Basically, Kilowog - particularly important Green Lantern - comes down to Earth to learn about communism and the like, designing the Rocket Red armor in the process. The idea of including a lot of other forces, like the Lanterns, the Manhunters (not like J'ohn, the other ones) and groups like the People's Heroes would be very interesting to shed a light onto an intriguing period of history, especially in a world like this.
Animal Man: Actually one of DC's most underrated heroes. I think the inherent animal activism that comes with this makes Bernhard Baker an interesting character to delve into in the modern climate, and him being defined by a generally positive relationship with his wife and children actually gives him a sense of depths that we often don't see a lot in superhero media. Not only this, but I think taking thematic inspiration from Morrison's run on the 80s reboot could be quite fun... though as much as I would love to see the later parts of said run on the big screen, it wouldn't be too fitting in the new medium.
Even so, Animal Man feels like a really unique force to bring to screen. A much more obscure hero, who grapples with his own relative obscurity and his commitments to his family just as much as the enemies he comes across, seems like an interesting choice - and it wouldn't hurt to see other animal-themed characters show up in his stories, such as Vixen or Dolphin.
based already