The movie takes its time with gainful setup. The movie doesn't meander anywhere and it seems to have a purpose for most scenes. The beginning of the film features Batman looking to assemble his team (like an Overwatch team) of superheroes with powers (which he lacks, but has resources and leadership abilities) to defeat this new threat called Stephenwolf but honestly it doesn't matter who they're fighting, they just need an excuse to kick some ass.
Batman is portrayed in a smarter light in this movie as opposed to Batman V Superman where he came across as a violent maniac. Gal Godot is sexy and straight to the point, just as you would think an Amazonian warrior would act. The Flash is nerdy and quite green here. Cyborg is disillusioned with his mechanical body but otherwise quite nice. And Aquaman is a strong dude with a lance. There's the team, now fight! Superman gets raised from the dead to help defeat Stephenwolf and he's the most emotionally expressive character in a sense. He picks up Batman once he's revived and says, "Do you bleed", an ode to the Batman V Superman movie where Batman says that to him and hits him with a kryptonite lance. That was a nice Easter egg.
The action scenes in this movie are quite good. Its nothing we haven't seen before in superhero movies but it is quite thrilling. My favorite part was probably when Superman was fighting the Justice League team when he was revived because he didn't know who he was or where he is, he was just raised from the dead, like Jesus Christ or something. Batman played God in this movie and it worked out for him but I have my doubts about some sort of after effect happening-Bizarro anyone? They ended up reviving Superman with this thing called a Motherbox, some kind of multidimensional box that contains "deep power", or whatever they want to say it does.
Superman was portrayed in the most human light in the film. Hell, Batman even remarks, "He's more human than I am." After he realizes who he is Lana Lane (Amy Adams, whom I love because of her performance in The Arrival) comes and they go to his childhood home on the farm. They talk and catch up. Lana says she wasn't strong when he died. They kiss and hold each other. Its the most emotional scene in the film. Superman eventually realizes he has a job to do and takes off. But that scene made the movie more interesting and contrasts with the darkness of the film, a feeling a hope that wasn't present before.
It should also be noted that the film portrays a dark atmosphere. This is not the Avengers, where everybody is laughing and joking around with each other. There's jokes here but they're a little forced and not quite that funny (nobody in the audience laughed at anything). The opening song of the movie has a woman singing, "Everybody knows the world is over, everybody knows the good guys lost." Its the perfect music to setup this dystopian superhero adventure. In essence that's what the movie is. Its not meant to be the best Justice League movie, its just meant as a stepping stone for other DC movies to come, hopefully featuring more superheroes (Martin Manhunter and Green Lantern please) and the Justice League fighting more interesting enemies (after the credits there was a scene with Lex Luthor talking about forming his own team of bad guys).
Although the plot was exceedingly simplistic its reasonable to say its to be expected from this sort of action superhero movies genre. What this movie does better than the first Avengers film is that it keeps your attention on the different scenes and animation techniques, something I looked at with great detail. In Avengers there's so much fighting going on that you forget that there's even dialogue sometimes. In this movie dialogue is used in a smarter and more effective way.
The good guys have won for now. But can they withstand the onslaught of the enemy team of ragtag super villains? We'll find out in the next film.