Now and then I have an already edited video which needs some reediting but there is no edit to work with. So you have all the rough material and it can take hours or days to rework what someone already did. Causes for that might be a rework years later and you edited on a different system which doesn't allow to export XML or EDL or someone else did the job or a version of an edit whch is simply gone.
So I would love to see a feature which analyses an existing clip, it will find editing points (already implemented in Premiere!) and then searches in the project for matching frames and doing an re-edit by itself. It is not a feature which you need every day but if you need it it can be a huge time saver.