How do I only see the clips I've previously used?

So I have a wedding project where I have over 2800 clips that I used to create 3 different videos from the data. Now I need to create a Wedding Teaser and I only want to use the clips I've used before in those videos I made. Is there a way to sort the media pool in a way that I only see clips I've used before in any timeline? That will save me about 5 days of time because I don't have to sort through all the 2800 clips again and I don't need to grade since I can color trace. The teaser is going to be about 1 minute long. So I really need a feature that can help me sort in the media tab only the clips that I have used in any other timeline (in the same project of course). Is there a way to do this? If not, where do I request for this feature cuz it can save a tonne of time in my wedding workflows (and possibly help other people too)?