I just deleted a lot of files from a folder by tagging and control-Delete. Partway through the operation, I wondered how many files there had been before I started.

The time estimate during the operation shows percent done, time and time left, and if I'd been thinking, I could have noted how many were left when it got to 50% and doubled it, but I wasn't.

Would it be useful to also include the number of files and the number left? I don't think this would be useful to me that often, but occasionally it would.