My idea for a DC movieverse is to do the exact opposite of what Marvel did. Marvel foreshadowed and set up The Avengers since Iron Man 1. There were constant references, constant characters from other Marvel titles showing up in an independent superhero's movie (Black Widow in IM2, Hawkeye in Thor), and constant plot tie-ins (Fantasy of Thor leads into the Cube in Captain America, which leads into The Avengers). For DC, don't do any of that. Have every character in his own film franchise doing his own little thing with no to very little connection that would show these films take place in the same universe. Either that or throw small easter eggs every now and then - such as a Daily Planet article in the background titled "Mysterious monster-bat creature strikes Gotham" or something like that. Then when the JL movie is released, have all the heroes come together but instead of them being brought together by a government organization like how the Avengers were, have them come together by themselves after the government and army fails to stop whatever threat the planet faces. That way, they can do a DC movie continuity without seeming too much like Marvel. Plus, it wouldn't be good to have too many cameos and crossovers in a DC universe to begin with because the Marvel universe was naturally made that way while DC wasn't.
Also, off topic but I want to see the original 7 in the JL movie
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