Think I've finally gotten my Plex server the way I want it. The biggest thing it lacks is all of the untagged music tracks. (I have a fairly significant music collection.) Most of the information I have is in cue sheets with all the albums, and I try to create accurate cue sheets.
I used to hate re-tagging files because I didn't want to mess with the file as I had it. However, having ignored ffp for as long as I have, it's now indispensable.