Very, very disappointed. I'm a huge fan of the world that J.K. created, but this film falls seriously flat. The plot was convoluted, there were times that something occured and I wasn't sure where on Earth it was occurring. At times Jacob would just sort of appear on screen and you're left wondering how or why he got there.
The character building that took place during the first movie was completely ignored in this movie. Queenie was enchanting Jacob, when we all know he's head over heels for her, then goes over to Grindelwald for some reason? I hope she's been enchanted. Tina, after falling for Newt in the last one, reads a misprint in a random magazine that Newt is engaged and, rather than sending a letter like any normal person might, freaks out and starts the movie basically hating Newt.
Nagini could be completely removed and nothing would have to chance. She was complete useless in the movie, and the only person who even acknowledges her presence is Creedence.
Lita Lestrange appears, along with Newt's brother, to... What? They could have been removed and that would have made the plot way more concise, rather than introducing new characters just to sacrifice one. I couldn't figure out if I needed to be sad or relieved that her convoluted character arc was over.
Not to mention the godawful twist at the end that, if true, destroys the already established canon.
Overall, the visuals were lovely, but the plot was such a disaster that it was clear this movie exists simply to get to the next one. 2/10 for being pretty, at times.