The first FB movie was rather horrible, from Redmayne's Newt to the story, to everything, so much that it lessened the good feeling that the whole HP series has left us with. It seems that they learned from the feedback -or should I say backlash- from the first one, and improved all aspects in the second one. They mainly did that by numerous references to the HP world we already know, drawing from stories and characters from that world. N. Flammel, Nagini, Dumbledoor, a Lestrange, even a younger version of Prof. McGonagall, all nostalgic aspects that seem, at least so far, to be integral parts for what's to come in the FB series. Those who say it feels like a filler they are right, it does, but that's not a bad thing if the creators of the franchise actually give us really good HP films in the future based on what they built with the Crimes of Grindelwald. The important thing is that it seems like they avoided the total disaster that the first FB movie showed it will be.