Ah okay, the timestamp feature is new to me. I have enabled it now, lets see how it works out! thanks!
For the staging area I had the following Idea or usecase:
If you put in some PDFs (or any other items), the whole batch is shown in some group until the next import.
Maybe even have the option to put in all items which where never edited manually.
The idea would be to be able to edit all imported items.
btw: is it possible to create a group with has all items in it, which has a timestamp of the last day or so?