4. Introduce J'onn J'onzz As A Main Character
There's two ways Martian Manhunter could be portrayed, but only one that would work in keeping with the tone of the universe. Martian Manhunter needs to be a core character of the JLA straight from the start. The new 52 series has changed his back-story, but that can be easily fixed. Anyway, I reckon Martian Manhunter will spend more time as alias John Jones in order to bring the group together - similar to Nick Fury in The Avengers. The link between Superman and Manhunter will probably be established in Man of Steel, which makes sense as DC will want to introduce its cosmic universe as soon as possible. As Martian Manhunter, he can act as the bridge between Wonder Woman, Superman and Green Lantern, and as John Jones he can bring the human members such as Batman and Green Arrow together. Wouldn't he be the most logical choice to form the team?