Let's get the obvious thing out of the way. The superpower is exactly the same as in the earlier series. Women in a given family are genetically wired to be immeasurably strong unless they do something bad. Only here it's dialed up a few notches.
They even have Bong-Soon's cameo in one episode, which I thought was a nice touch. They're shamelessly capitalizing on the earlier success and I'm all for it.
You can expect similar slapstick humor, "comical" fights, charming characters, and so on. It's refreshing to see that the mother here isn't a constantly yelling banshee like in the 2017 series (her annoying, judgmental screaming still rings in my ears 6 years later), and overall they have less of those unbearably stupid "comic relief" characters like the ever-complaining neighborhood ladies and the inept thugs who bump into one another in absurd ways and shriek.
I am at Episode 4 (latest released as of today) and I find the series enjoyable in an escapist, mindless sort of way.
I hope they continue in this style and the series doesn't switch genres midway as the Korean shows do sometimes.
The protagonist has the potential to become annoying with her cutesy/childish antics, but for now it's all good fun.
Can't wait for the next episode! Well done, team (so far)!
Update - as the show goes on, the humor becomes repetitive. A small childish young woman beats up huge angry men in "comical ways" or shocks them with her superpowers into a "comical" open-mouthed stupor. Still, this version is much easier to watch than the over-the-top, unbearable 2017 version.