I love how they handled Hanzo and Bi-Han's backstory in this, in particular the casting and more nuanced depiction of their Japanese and Chinese origins. The martial arts, costumes, and set feel way more authentic, they're speaking the correct languages, etc. Lots of great little details.
Honestly, when they did the soft reboot in MK9, this is the kind of stuff I wanted. The games always played fast and loose with "oriental" culture with "Rayden," the "Chinese ninjas," and so forth. It's gotten better since the reboot, but it's still not the best. The series is fun and I absolutely adored it when I was a teenager, but it gets really stupid and adolescent to the point of self parody at times, which has kind of turned me off to the series as I've gotten older.
This movie seems to be going for a generally more grounded tone, which is what I've wanted to see in the series for a long time now.
That said, after watching the opening scene, my biggest concern is all the other stuff that the movie has to be about besides Hanzo and Bi-Han. Also worried that there might be some tonal whiplash when it gets to the characters basically going by pro wrestler stage names.
It's generally the opposite. When a movie is bad (or at least when the studio is not confident in it) they will withhold footage and have embargos last up until the premier so that negative reviews don't get out.
The movie has also technically already premiered in other parts of the world, and the reviews are pretty mixed, but it's kind of hard to make heads or tails of them right now. Seems like some people don't like how much more grounded and serious this take is, while others are upset that it deviates from the games too much?
Personally, all I want out of it is good production design, cinematography, and choreography. The casting already seems to be really solid. I know the story of Mortal Kombat; it isn't the best.