It's a huge mess, it's clear there was not a single focused idea, rather than many different scripts made to fit with each other... at least that's my best guess. Which means it's about a lot of different characters some who are boring, some who don't really matter at all and yes also about some who are interesting and matter, but when the movie gets to them it has previously wasted time on several side characters or plot lines that go nowhere. Which means it drags and feels unbelievably boring far too often(I can't believe I am saying this about technically a HP movie!) and while I get this period is supposed to be rough and not a joyride for the characters and the world at large, but it's utterly bleak and while there is humor, it has a distinct lack of joy!