Videos downloaded, not created, on Studio need to have some sort of editing feature available to add lines, blurring, etc. to the video. This is useful not only as an editing tool to go back and fix older videos but also as a way to use videos form older classes or other recordings in Studio to make them more engaging.
The only option now is a long workaround involving downloading a video and inserting it into a screen captured recording to make a new editable video. This is too long and too difficult to recommend to others.
This would make Studio much more user-friendly and make the work done on it or through it much easier.