This Hunger games is the second Quarter Quell, so the 50th one and 40 years after The Ballad of Snakes and Songbirds. It's very similar to the first Hunger Games book in that you see it all from the perspective of a District citizen, how the games and the oppression of The Capitol impacts his world. It's dark stuff. Collins does not pull her punches and I have to always respect her for that. This is Haymitch's origin story, the second District 12 Tribute to win and it fills a narrative gap between Snow's romance with Lucy Gray and the main saga with Katniss Everdeen. From that perspective and for those kinds of fans, this book does a serviceable job of showing how all the strands connect, especially in the District 12 community (Haymitch's love is Lucy Gray's daughter and his friend Burdock is Katniss' dad).
Unfortunately, the overall plot and portrayal of the Capitol and the Games are not that innovative. Snow, in particular, is the full-fledged omnipotent evil he is in the main series. It would have been nice to see a bit more of his evolution to this insane levels of control and cruelty. Likewise, the plot is not really that interesting. Haymitch stumbles his way to victory, being confused and bummed most of the time. There is no real moment of victory or even any kind of catharsis for him or the reader. And then he just gots screwed and screwed and screwed at the very end. Again, Collins does not hesitate to portray evil, but I just wish there had been some more development in his personality or some way that he irked Snow and forced a change in the system or something. If he wasn't from District 12, this story would have just been a basic Hunger Games underdog victory story where the upstart gets punished and we learn that if you try to confront the Capitol you and everyone you love will be destroyed.
Another annoyance for me was that the ending basically reprints almost the entirety of Poe's The Raven. There is some clever plotting of Snow's evil manipulations but it felt lost in a very long denouement interspersed with way too many stanzas that didn't seem all that relevant. Kind of felt like Collins was either trying to pad it out or just loves the poem so much she wanted to force it down her readers' throats.
I hate to say it, but it felt like fan service drove the need for this latest book rather than a true inspiration to to tell Haymitch's story and open up the history of the Games.