I would really like a Justice League movie with Vandal Savage as the villain, I think that they could do a lot of world building just by the end of phase 1. Vandal Savage, if you don't know, was a caveman who was blessed with immortality by a meteorite. He's lived all throughout history he was the pharaoh of Egypt at one point and we can also reveal that he actually was Genghis Khan and Blackbeard. We can also reveal that he sank Atlantis into the ocean to jump start human evolution into meta-humans so that he could find a cure for his fading immortality (That doesn't make sense, I'm sorry, Vandal Savage just has such a convoluted past.) He just wants to "recharge" his immortality so he can rule forever and the Batman who many people think is a myth has to form a team to fight him.
