7. League Interplay
Of course this probably goes without saying, but Warner Bros. Studios would be unwise to have accepted a script that skimps on awesome, fan-pleasing hero interplay. For example, Bruce Wayne holds issue with Green Lantern Hal Jordan (and most other human GLs to be fair); he cant stand fighting side by side with a GL, as GLs by their very nature are blasé, whereas Batman prefers subtly, tactics. But Green Lantern Hal Jordan and Green Arrow on the other hand, are great friends and, in comic book canon, ex-crime fighting partners. So theres obviously a kinship whenever you see them interact with each other in the comics. For a Justice League movie to work like we, the fans, want it to, this kind of league interplay must be thoroughly researched and decently explored before we ever get to the world threatening crisis. I mean, that was one of the great things about Whedons Avengers script right? Apart from its amazing execution on screen, Whedon seemed to really know how these characters fit together in the whole grand scheme. And for my money, The Justice League needs to follow suit.