The Play button could work better for collections, especially for libraries of arbitrary videos.
When I press the Play button in a collection view, I expect it to continue where I left off: Either the next unwatched video in the collection, or the remainder of the last partially watched video.
And when the video finishes, then playback should automatically continue to load the next video.
Instead, the Play button always loads the pilot. And I have to manually load every successive video.