This is my fancast for a Justice League reboot titled Justice League: Rebirth. This would be set as an alternate universe, much like the comics so that other versions of the characters can exist on screen. Since we're already familiar with these Superheroes, origin/back stories can be told later, individually, after the JL relaunch. In this version, Wonder has been working quietly saving people while the world is aware of Superman and vigilante in Gotham.
After a mysterious foe begins hunting superhumans and draining their powers a small group of superheros gather to form a justice league to fight against a mysterious conspiracy that becomes an intergalactic threat.