I honestly believe there are three DC characters that need an animated series; first is Steel John Henry Second is a buddy cop comedy Booster Gold and Blue Beetle! So here is my idea for Steel he put down the suit but something big happens to force him to put it back on . The episodes have a connected story but can feel like a stand alone; also he teams up with different members of the superhero community. I would also put it at an R rating.
Booster Gold and Blue Beetle would be called Blue and Gold. I would see it as a Harley Quinn types show but Booster is always being sleazy and Beetle is in a nice relationship until he finds out Beetles girlfriend is cheating on him with a super villain. The girlfriend killed before she tells the identity of the villain and seeks a blundered tale of revenge and self improvement. What would you like to see get the animated treatment?