Feature to collect unused raw footage to be Moved/Collected into a folder

It will be a great feature if we have an option to collect or move all the unused footage to a subfolder in the FInder/File Explorer. so we can delete manage footage and storage more easily. 

I work for a marketing agency and i often get 30-40gb of footage for a 30 sec reel. I'll also have to make variatiations in the future so i cant really get rid of all footage. Now i consolidate and collect files into a different folder after a project is done. but that is really messy and doesn't keep my original folder structure. so it will be sooo helpful if i can just select all unsed footage from inside of premier pro and movie it or even an option to delete it from system storage. What do you guys think?