If you think of this film purely as a 'scene setter' or 'bridging' film to further build the Fantastic Beasts world then it's absolutely fine. As a stand alone movie though it's a little drawn out and boring with not a huge amount really happening over the course of it. Further movies in the series may prove this one to be very important in the canon though depending on where they go from here. Overall a bit of a slog but time will tell on its place.