one big missing feature for me is the ability to exclude media libraries from being announced via DLNA.
Currently every library create in PLEX server is visible via DLNA when enabled. With this creating for instance child-only libraries makes not much sense when you want to give kids the ability to view movies via devices without plex installed/need to create a login.
The one and only workaround would be the local installation of a second plex server providing a subset of movies.
The easiest way would be a media library config flag like “Don’t announce in DLNA service”.