Like which comics should be used or what they should do? I'm really interested in other people's opinion.
I think if Warner Bros DO make a JL movie, they should use Trinity, and Justice League new 52 (issues 1 - 7)
The whole last act should be the new 52 in my opinion. AND Bats and Supes met before. Diana's greek view vs everyone elses plus her reaction to aliens and Superman. And just like the new 52 JL, hal and Barry know each other.
So basically, the first act will be about GL and Flash, Supes and Bat, and Diana's first encounter with the world. Second act will be them trying fight aliens. Third should be the new 52.
I think JL film would be pretty good, but nothing like Nolan's film or as innovative as Avengers (Well, it is the first film to get all the characters together)
Or maybe it should be a TV series