Wasn't sure where else to put this, because it's less skepticism and more...a concern that a good chunk of this could be exposition-heavy, mostly for introducing characters, less so the plot.
I mean, we're getting introductions to Aqauaman, Mera and Atlantis, Cyborg, Flash (and appearances by Harry Allen and probably Iris), Gordon. I don't know how much time, if at all, will be devoted to brief origin stories or it they'll be in vignettes like we got for Suicide Squad, but obviously this is of a much bigger scale, so I can't expect the film to just handle the likes of Victor and Barry in seconds.
To compare to The Avengers, that film had the advantage of not needing to spend a large amount of time explaining each character because we'd been following them throughout their solo films leading up to his. I mean, sure, we got sort of a re-introduction to Bruce Banner and even Hawkeye's family history was saved for Age of Ultron- though we did get his history with Natasha- but that film could get right to the story.
And I guess that's a concern I have with Justice League where, on top of continuing the plot from Dawn of Justice and looking to be grand in scale, you want the audience to care about these new characters, so just wondering how much time could be devoted to introductions.