I think visually this movie was terrific. As far as it being engrossing and understandable story-telling - not so good. If you have read the book, and read it somewhat recently, you can follow the film, but I think that if you don't know the book, you will be not be able to follow the plot.
It seems like the script writer took the highlights of the book and glued those together to form a film without using the nuanced parts of the story that tie the highlights together to make the story make sense.
In all fairness, I did not see the first six films - perhaps they were all done this way? I have read the book series twice and am a fan of that.