> Mockingjay Part 2's biggest mistake is being completely faithful to the book, considering that it is the worst one of the trilogy. They had the chance to make the story better but chose to stick to what they had. Being the final chapter of the story, it has emotional bits, but miserably (and unfortunately) fails to sell them, rushing the scenes which we were supposed to remember the most.
— @aag's review (https://trakt.tv/comments/62697, and we need proper internal link markup on Trakt!)

Seriously. The big dramatic moments are unbelievably rushed—there's no time to dig into them. There's too much focus on bad CGI and not enough on characters. Basically every character is 2D at best, except maybe Katniss and Peeta. But that's also due to sticking true to the book. None of the characters in the books were particularly well fleshed out, either, as I recall (from reading them 3 ½ years ago).

I also found the story very predictable. Obviously there's some amount of subconscious influence from having read the books, but it's also just absolutely clear when the big surprises/twists are going to happen, and what they'll be. They end up not being surprising at all. (Not to belabor the point, but the book had this problem too.)

My other big issue—which applies to the whole series—is that we barely see anything that happens away from Katniss. I know it's quite common in YA novels to present a limited first-person perspective from the protagonist's point of view, but in a big political saga like this I feel like that severely limits the storytelling.