Not sure what is being asked for.
Some people use backup to save files, cache and settings.
Some people use persistent /home and /opt to save files, cache and settings, not backup.
For the people who use persistent /home and /opt (not backup) to save settings, backup could be used for another purpose. That is to backup personal files (but not program cache and settings).
This can be achieved at present by putting a long list in .xfiletool.lst.
It would be nice to have a simple method to exclude all hidden files (rather than the long list).
I don't know how difficult it would be to implement.
If it is difficult, it is not essential. If it is not too difficult, it would be nice.