@QuietSilence: The whole point of calibre is that there is no longer any need to maintain metadata in filenames, which is a very dicey and error prone endeavour in the first place, hence your attempt to come up with file naming conventions. That effort by the way is doomed to failure. What happens with books that have metadata that includes characters that filesystem dont support or whose metadata is longer that the filename limit of the filesystem. Rather than encouraging the preservation of this error prone methodology, calibre delibrately tries to divorce you from over-reliance of filenames.
Maintaining metadata in filenames is sooo yesterday