I can tell you what I didnt like because the topic is, for me, the meaning of sick minds.(I watched the film, not read the book). I didnt like the idea of "teenagers&childs in fight". There were lots of children which were under 18 years of fighting with theirselfs... Childrens are not soldiers and shouldnt be. In my country(Turkey), we must go to military for some time. It depends on your education but the lowest age is 21. And I am sure in that film they werent over 21. They were barely 18!!!
I enjoyed the actor's performances, and the training area in the Capitol was great. I was a big fan of most of the Capitol parts, and I liked the scene where Katniss blew up the Career's supplies. Thought it translated into film pretty perfectly.