When I mean current villains, I mean villains from works that are still ongoing, and are currently listed as alive or unknown status.
For me, I'd like to see Chicken Boo reform. I know what it's like to be unpopular, to be left out, and how a person can resent even their friends for being popular. But, Hulu has stated that if the first 2 Animaniacs reboot series do well, the supporting cast will be fully resurrected. And I think that should open with a sequel to the Chicken Boo villain cartoon. And it's only when every character is in mortal danger, even chicken, and when he remembers happier memories, he reforms himself.