First of all.. I think that contrary to what people say, A Justice League movie CAN work, if you have the right ideas for it. I also agree with Joss Whedon's statement that, these characters are larger than life, and should be handled as such. He are my thoughts on what will make a JLA movie relevant and how it can be made in such a way that, it does not come off as a rip off of Marvel's The Avengers, seeing that, using the MCU formula and linking the movies together might not work, and even if it does, audiences would have seen it before, and it will not be anything special. To make a Justice League film that will truly please the audiences and excite the fans, We must first pull out the liberties we have, as a comic book property. Forget realism, and do what comics do best.. bringing the impossible to life.
I think a JLA movie, should be made with a "CRISIS" type story. The premise of this movie, will start and end with Darkseid. Who finds the Anti- Life equation, and decides to re create the universe to his own liking. But the Gurdians of the Universe, being who/what they are, find out about this, but are powerless to stop it. Hal Jordan is made aware of this, and is told that There is a reason why everything circles back to the planet Earth. Human beings, and our humanity, is what can save the universe now. Due to Darkseid's manipulations, soft spots have been torn into the fabric of space time and the multiverse has Merged. So all these guys who lived in their own reality, are now part of this new reality. But no one except GL knows this. The Guardians tax him to get the worlds greatest heroes together, band them together and save Earth. For the destruction of Earth and humanity, is the final piece to the Undoing of the Universe. But he will also be told that he is only to to find them and convince them to stand together against Darkseid, but a natural leader will emerge among them (which will mess with HJ's ego). It should be more like a hero's journey involving these people who do not remember what things were before (having their own solo universes and having never heard about each other before) but are willing to fight, to keep things the way they are. So after Darkseid's defeat, The new Universe can unfold from there with prequels of how they got to the "Crisis" point and sequels of After. This is just my idea for making a cinematic Universe if that is tangible, and not derivative of what has already been done before.
Another Good way will be to Adapt Flash point as a lead up to a Justice League Movie. The whole world knows these heroes a certain way. Flashpoint pulls the curtains back and the story would have audiences rooting for things to go back to the way they were. They will want Bruce Wayne back in the cowl, Superman not being a skinny prisoner, Wonder Woman not being a heartless Amazon. This Adaptation will also give The Flash genuine relevance as a solo hero (Explaining the speed force to audiences and showcases the extent of his gifts. ie. he's not just a guy who can run really fast). This is a solo movie where the Flash will gain serious respect from audiences and its ending, which beautifully sets up the new status quo, would be a great lead in to a shared Universe. In fact, this way, Bale, Cavill and Reynolds get to come back to their roles without having to worry about continuity. Its will also be a chance For DC to showcase some of their unknown characters, as the minor guys factor big time in some pivotal scenes of the Flashpoint story.
This is just what I feel could be done with the property. Oh and guys, this is my last Article before I leave for Air Force training in Texas.. So see you guys in 12 weeks! Thanks for reading