Okay but there is no reason that adding this library would mean anything has to happen to VLC's ability to play a file without doing anything to it or organising it first. Many music players offer both a library and will play individual files thrown at them without any importing ceremony. eg, Winamp.
If your goal is simply to play a video file, it's sheer overhead.
I don't want every text file I download to be categorized and moved into a semi-permanent collection. Nor do I want the same as a default for image files, music, video, or anything else. Some things are ephemeral.