Fantasy Hollywood producer is a fun game to play. Imagine being given the resources to – just for a laugh – resurrect Alex Cox’s doomed version of Fear and Loathing in Las Vegas, or Tony Kaye’s original cut of American History X. There must be scores of bona fide lost classics lurking on the cutting room floor, if only we had the time, money and inclination to bring them back to life.

But Zack Snyder’s original cut of the 2017 superhero megaflop Justice League? The jury remains out on whether this will be any better than the version edited by Joss Whedon that bombed in cinemas, but we are getting it anyway at great expense via an extended debut on US streaming service HBO Max.

The first extended trailer was among a number of new projects to be teased by Warner Bros’ DC FanDome at the weekend. And yes, it looks very different from Whedon’s version, which reportedly reshot 85% of the movie in order to add the Marvel veteran’s trademark superhero banter. There is Darkseid, a villain who didn’t even make it into the theatrical cut, there is Superman in his famous black suit, and there is ... well an awful lot of tan and teal colour grading. It looks like a Snyder movie, thanks to an abundance of slo-mo and stylised shots. And it feels like a Snyder movie (specifically Watchmen), thanks in large part to the use of Leonard Cohen’s Hallelujah as the trailer’s backing track (recalling Snyder’s use of Bob Dylan’s The Times They Are a-Changing for a bravura extended montage in his 2009 adaptation of Alan Moore’s classic graphic novel).

The issue is that Watchmen boasted truly iconic source material for the film-maker to riff on, and Snyder is pretty good when all he has to do is take other artists’ ideas and make them look awesome. It remains to be seen whether Chris Terrio’s original screenplay for Justice League has the depth to match the trailer’s splendid looking visuals. But, for now, it’s enough to say that the new cut looks worth checking out, especially for the army of DC fans who objected to Whedon’s hiring in the first place.

Also screening via DC FanDome was an early look at Matt Reeves’ The Batman, via the film’s debut full-length teaser. Hang on a minute, you might be thinking, wasn’t Batman also in Justice League (except played by Ben Affleck rather than Robert Pattinson)? And you’d be right to wonder what is going on, except these things are immaterial now that DC has decided to mutter “multiverse” loudly whenever such awkward questions are presented.

Reeves’ more minimalist take on Gotham City has been promising to take us back to the dark knight as world’s greatest detective, and there is certainly an abiding sense of curdled, dread-filled noir hanging over the first trailer. Colin Farrell, in heavy prosthetics, makes a particularly rancid and forbidding Penguin, and there are even hints that the legacy of the Joker may be lingering in the shadows – Batman is seen brutally taking down a gang of ne’er-do-wells sporting ghost-white face paint.

What a choice Jeffrey Wright is to play the new James Gordon. He’s guaranteed to bring something fresh and distinctive to one of the most well-trodden roles in comic-book cinema. It remains to be seen whether Reeves and Pattinson can do the same for Gotham’s caped crusader himself, but the signs are good, even if most Batman fans probably never expected to find out that Bruce Wayne sports smudgy, emo-style eye shadow underneath that forbidding cowl.

Up next is the latest trailer for Wonder Woman 1984, Patty Jenkins’ sequel to the best DC movie so far, released in 2017. This is our first proper look at Kristen Wiig’s Cheetah, the movie’s main baddie. And yet the introduction of the feline supervillain is overshadowed by the return of Chris Pine’s Steve Trevor, who appears to have been set up for a traditional fish-out-of-water storyline in the 80s-set sequel. There are undoubtedly laughs to be had by transporting a first world war veteran to the decade of sequins, scrunchies and shoulder pads, but the movie is also going to have to explain how Trevor survived being blown up on a plane filled with poison in the earlier movie (not to mention the fact that he doesn’t appear to have aged).

The 70s Wonder Woman TV show got round a similar issue, as the action jumped from the second world war to the present day at the end of its first season, by making its new Steve Trevor (still played by actor Lyle Waggoner) the son of the previous iteration. Let’s hope Jenkins et al have a better solution up their sleeve than Chris Pine Jr. Otherwise, they can always try shouting “multiverse” again at any pesky unbelievers, and running hard in the opposite direction.