Here a crazy theory, maybe the person who is walking towards Oliver laying on the cliff's edge is Bruce Wayne in unnamed appearance, as long his name not mention and they give subtle Easter Eggs to who he really is, I know it probably not but who knows that would be great for him to be on the show without BEING on the show
I love the idea that Thor now have a sister, in my opinion, Marvel need to shake things up now and again. Of course, you might have some fans who like things stay the same but some Comic Books companies, like Marvel and DC, need to change the format sometimes to keep thing fresh for the fans to keep them guessing and interested in the character(s).
Warner Bros. studios should stay the hell out of it and let the professions handle it and what I mean by professions, I mean the writers who know the characters and in my opinion, it should NOT BE AN ORIGIN MOVIE, have the movie start several years after the formation of team
I kind of figure it was Darkseid but this shouldn't be a origin movie they should establish that JLA been around for years and have more members, in fact should open the movie with other members going on deep space mission and leave the original seven on Earth to face the big threat themselves