Justice League of America: 1967

WB Animation, YOUNG JUSTICE. I claim no ownership of the character or his various incarnation across the DC multiverse, this was developed from an existing template.

So here we finally come to my Justice League movie idea. This would follow a Superman origin movie, the Wonder Woman WWII movie, and a Batman: Long Halloween movie set in the mid 60s. I envisioned this Justice League being formed as an after the credits teaser at the end of the 60s Batman movie; an organization of local legends who occasionally come together to solve global problems. The League would be formed by Superman and Steve Trevor would be the US government's liaison to the League. It wouldn't be a very well publicized entity, but people would know it existed, but mostly ignore it. No one spends all night and day obsessing what the US Navy is doing at this exact minute, so I want that to be how late 60s America sees the League: We appreciate what you're doing, but we have our own shit to worry about. the first Justice League movie would be set in 1969 and would be another original story.
Anyway, the Roster from left to right.

Alan Scott: The Green Lantern - I wanted to keep the Red button down shirt and green cape, but make it look more sensible, and loose the straight up drawing of a lantern on his chest. In this continuity, the Starheart is a damaged Green Lantern Ring that we see during the credits of Superman: Last Son of Krypton, as Rao's nova destroys a number of worlds, a Green Lantern is killed and his ring rides the stellar winds to Earth, landing in China in the 1930s shortly after Kal-El. Alan picks up the ring from a curiosity shop in Shanghai in 1940 when he was a Merchant Mariner. We see Alan as a minor character in the Wonder Woman movie, but he doesn't become a major figure until the Justice League movie. Alan Scott is a shy and reserved Green Lantern, largely due to the persecution he faces for his sexuality. He is totally oblivious to the Lantern Corps, and not able to use the full extent of his Ring's power due to a lack of training by the Gaurdians and the damage done to the ring during its transit to Earth. He can fly, has enhanced strength and can shield himself, but he can't form constructs beyond simple shields and blasts from his ring. Oddly enough, this reduced capability is the only reason he's managed to keep his ring operating so long with out a Power Battery. As of 1969, Alan is the oldest human member of the Justice League at a respectable 52 years. His ring's power is beginning to finally run out, but he is still formidable in a fight and serves the role of the League's conscience, a sagely figure who tries to keep the League calm in tense situations.

Bruce Wayne: Batman - This Bruce is essentially Frank Miller's Batman in his prime. He's been fighting crime in Gotham for only about 4 years, and is much more a detective than any version of Batman put to film. Think Film Noir detective + Ninja, with a dash of Dirty Harry. His costume is fairly plane, just a bit of Kevlar near his chest and parts of his back, and an old school cowl (can't armor his head, why do you think he wears a target on his chest?). Bruce is very much the brains of the League (and the wallet really), and provides a good counterweight to the rest of the team's more upbeat, almost naive perspectives. Unlike the Batman of most films, this one has something that kept driving him to pursue a life as a crime-fighter. Rather than focusing on his mother's pearls falling to the ground, in this Batman's origin, he sees the glint of a mask just past Joe Chill, the mask is that of an Owl. Whenever we see Batman, in any film, there is always a cork-board at the back of the Cave, a mess of photos, fingerprints, and news-clippings, all strung together to an old drawing of the owl mask in the center. Much like the Nolan-verse, this Batman built his suit and equipment from Wayne Enterprises technology, and is largely grounded in reality. The first Batmobile, is really just an armored car that the military rejected for use in Vietnam (think Humvee meets GTO). The Batsub, is just a Wayne Enterprises DSRV. The Batplane is an experimental aircraft that looks like a Harrier had sex with an SR-71. He has no fancy gadgets in his utility belt (this may be set during the Silver age, but this is no silver age batman), just a grappling hook, smoke bombs, and some batarangs.

Clark Kent: Superman - I've already covered this character, but I'll keep it short. As of 1969 Superman is more a symbol fo what America is SUPPOSED to stand for, rather than what it actually stands for, what with Vietnam always in the background. He's still the Kansas farm boy at heart, but to most of the world he looks like a god. Most of the people he saves rarely get a glimpse of him, and when they do they are in awe of his might. President Nixon has asked the Man of Steel to intervene in Vietnam a couple of times, but he's always politely turned the President down, despite some back of the mind belief that he might be the only thing that could stop that slaughterhouse. Clark founded the Justice League in 1967 to do some good where no one else could, still remembering his run-in with Braniac as a teenager.

Diana: Wonder Woman - While she mainly lives on the island of her birth, Diana does spend plenty of time in Man's world as Diana Prince, Greek Civil Rights Activist when she's not Wonder Woman as the mortals have come to call her. Her relationship with Steve Trevor has grown into a romantic one, but his aging is beginning to make her question if her eternal Amazon youth is worth it. We don't see them making overtly romantic gestures throughout the film, only glimpses of their relationship. Diana has learned to fit in with Man's world, her speech now far less alien to those around her, and she's far more involved in the politics of the world than her counterparts.

Jay Garrick: The Flash - We only caught a glimpse of Jay in the Wonder Woman movie, but that's how most people see him anyway. I wanted to keep the simplistic outfit, but make the top look more like a leather bike jacket. His powers come from his Helmet, which originally belonged to the God Hermes. Diana was originally furious that Jay stole the Helmet to escape from his POW camp and hide it right in front of her and Steve, but after seeing all the good he's done in Central City, she's simply asked that he return the Helm to Themyscira when he retires. Jay is only stationary when interacting with members of the League, to the people of Central City, he's a myth. A red blur only felt, never seen. He is the devil may care, joker of the team, but few are more effective at stoping threats before they appear to happen. I'd imagine every action scene with Jay is one where we either don't even see him, or its some Quicksilver like slowmotion scene.