Characters you'd like to see make a return?

Reading crisis on multiple earths and Johnny Thunder seems like a really interesting character/concept. Basically his own genie? The powerscaling would be difficult but fun, I like how he just goes back and ruins the heroes origins so they don't exist anymore. Did think it was odd when he replaced superheroes with gangster counterparts by giving them their origins and that it worked for replacing superman too. Was he not an alien baby yet when that came out lol?