Seconded!! Especially since iPads only support horizontal split screens which is extremely uncomfortable for both watching videos and for writing — GoodNotes including the ability to watch videos from within GoodNotes would allow for me to use GoodNotes in portrait mode while having the video play near the top of the screen, a way, way better experience than the current one.

I suppose Astro 888’s idea is wanting to embed videos in the document.. my idea is different, I want to be able to use this for taking notes for online courses by being able to watch videos & simultaneously take notes with a “vertical split screen in portrait mode”, which currently does not exist.