It was really good to have a summary of what you have learned from lesson 1 2 3 then this lesson was a review. It's really good!
Does everything I had expected from a so-called Capstone Project.
Short reviews of the video lessons, that give you the chance to review and maybe re-take a lesson if the knowledge isn't good enough yet. Then sample HSK tests to prove your progress :-) ...
To me, a short review of grammar would have been nice, but I do recommend to take this course after finishing the first 3 Mandarin courses.
