I would like DC to make a revamped version of the Justice League, but this time as a prequel to Young Justice using the adult justice league characters. (Batman, superman, wonder woman etc).
Marvel wise, an animated young avengers show with Spiderman and some others would be cool.
I’ve heard The Walking Dead comics are actually quite solid, and differ substantially from the TV series. I’d love to see a faithful animation adaptation done in comic-style art.