Park riders cant be fun to watch if it's a case of how many, how big. Name a video of, for example Brendon Smith, where he did something that caught your attention. He is just full on all the time, thus every video he releases is practically the same.
Park videos CAN be good if there's variety to them, I particularly like Jake Clark because he has so much skill in so many areas, and I can appreciate his riding.
As far as editing and song choice goes, there really aren't many people in the sport that are accomplished video editors. There aren't many videos I can watch and fully enjoy.