It terms of movies I never asked for, at least this film has plenty to work with. The original series/films establish that we’re at Hunger Games 74+ and there was a huge war.
I’m not sure if Snow is the best main character, but having watched the film I think he was a good enough choice.
A prequel is always going to be a difficult movie, but I thought this did a fine job. If they want to make a few more I’ll probably watch them, but if they don’t I’ll be ok.