I've seen the Justice League War thing. It wasn't good. Superman was more a dudebro and you could literally see a point when Wonder Woman's panties started to get soaking wet for all the wrong reasons. They also tore Darksied a new asshole as the first enemy. The inter-character dynamics appear to be all 'edgy', reluctantly liking or respecting each other but not being friends. Probably not at the start but they'll grow to care for each other. Really, really bad. The only likeable characters I found were Cyborg and the Flash who at least seem themselves. Batman seemed like a bit of a dick, well, a bigger dick than he usually is. Hal was far too much a fly boy. Sure he has an ego and has his moments but he's often a reliable guy to have your back. The first half made him seem more like an overly arrogant fly boy getting his ego bruised repeatedly and deservedly.
I suppose the worst of it for me was the Superman/Wonder Woman pairing. They way they make her behave is very un-Wonder Woman like.