I know this will never happen considering that Titans has it’s own live-action show now and it’s basically Young Justice/Teen Titans, but I’ve always wanted an animated show focusing on the original five Titans (Robin, Speedy, Wonder Girl, Aqualad, Kid Flash.) I don’t think the five of them have ever been on screen together, but I could be wrong. I just love their friendship so much and it never gets the attention it deserves! Then in the second season, introduce Starfire, BB, Raven, etc.
A darker cartoon could be focused on the Batfamily. I know Stephanie Brown will show up in the next season of YJ, but I want to see the entire Bat Clan together. Bruce is the stoic and serious dad who’s overprotective and fatherly in his own, weird way. An older brother, fun-loving Nightwing. The aloof and kind-of-a-jerk Red Hood. Too smart for his own good Red Robin. Annoying but damn good at what he does Damien. Sarcastic, prankster Spoiler. Quiet and deadly Black Bat/Orphan. Have Barbara as Oracle. Maybe even bring in Batwoman and Azreal. And of course, Alfred keeps the whole family together.