User blog comment:OneOfThoseCrazyGirls/Crossover Idea: Warworld/@comment-27700324-20180329145357

Would be cool. Warworld i thought was a simple name reference since Mon-El lied about a lot of things. However then Superman mentioned it and i immediately knew Mongul was a part of the Arrowverse now since Superman is as truthful as they come.

As for Black Lightning. I don't see them bringing in just Annisa and Jefferson considering the fact that Jennifer has powers now too. However i'm not sure the whole cast is coming on unless Stephen Amell's idea of the crossover taking place after the season of each show happens so that way the filming of Black Lightning doesn't get in the way of the crossover event.