Overall I enjoyed it, but I actually think I was most disappointed in the sound design. Despite CITS not being a huge theater the sound felt distant, like the concert was happening in front of me but not that I was part of it. Whatever Gareth Owen did in MJ for that music to feel like it resonates in your bones needs to happen here. They still describe it as "immersive" but for that to be true I think they need to integrate a more surround sound-like system. (Though I think the concert at the end did seem to improve on that a bit.)
I know very little about kpop besides what my friends have mentioned, and from what it sounds like, the plot off-Broadway seemed more like it was peeling back the layers of what goes into making a kpop star, and while this show does that, a lot does come off as a bit trite. I think to people not familiar with kpop, some of it might seem overblown, but I don't think anything mentioned in the show is necessarily an exaggeration of how actual kpop idols are expected to work. But I honestly felt like the show worked best when it leaned into the campiness of it (whether on purpose or not), which happened mostly with the boy band plot in the second act, but also with some scenes between MwE and Ruby, the label owner.
Zachary Noah Piser's storyline feels like it wants to be more important than it is, but his character also comes off as a little douchey, and part of his monologue seems to be the same stuff I've been hearing for years about growing up Asian (though who knows, maybe non-Asians haven't been hearing that as much), but I thought Kevin Woo as the boy band's leader was hilarious in their confrontation.
Luna definitely comes off as a star here. It's a fairly competitive season but I can see her sneaking in a nomination. I'm definitely a new fan, and I hope she goes on to do more theater in NYC after this.
I'd definitely be interested in seeing this again near the end of or after previews to see if they've made any changes, but overall it's still just a fun time, though I think it'll also be a better experience if they can sell out the house and get really enthusiastic fans in the audience (like Six) to truly give it that concert experience.