One common issue we see is where a users cPanel account is used by many people and they make changes/deletions via File Manager and then we get tickets asking where files have gone.
The only way we can determine this is going through cPanel access logs manually. It would be very nice for File Manager to log when files are created/changed/deleted, the IP and user. Logs that the user can see. They don't need to be kept for a long time, preferably selectable but would stop such queries.
Similarly related, logging of services such as FTP, Mail and Web. Not just for the end user to be able to see for their own connections but admins too.
Having to manually check logs for say, incorrect login attempts would be handy. Even a section in the respective users control panel so they can see this.