The only thing I didn't like about this book was the 2nd person point of view - I loved that we had POV chapters from all of the 7, but I didn't like the "you pick up your weapon" rather than stick with 1st or 3rd person POV. 
With that being said, it definitely is a retelling of Seven Samurai and The Magnificent Seven - which isn't a deal breaker! But it follows a lot of those same plot points, while adapted for the Kindling world. I would have liked a character list (which all the 7 are clearly characterized and fully developed, at the beginning - maybe more so because I did the audiobook - it took me a minute to remember and sort out each character's details from the others; I also would've liked a Kindling class list cause I'm interested in taxonomies and I enjoy those types of things in fantasy books. 
But this book has found family in abundance, and I loved seeing 6 girls and 1 non-binary character make up the team. Adrian the villain is a bit one note for me, but I also don't think it diminished the book. The action sequences are good, and the final battle with the raiders is probably the last 20% of the book. 
Overall, if you're looking for a female led retelling of Seven Samurai/The Magnificent Seven about child soldiers who become Found Family, you'll like this.