Please don't use talk pages as a means to ask questions; nobody will see them. Use the packaging mailing list or the #fedora-devel IRC channel or open an FPC ticket if you need clarification.
Directories where all config files are read
What if the config file goes into a directory where all files get read (or where all files starting with "foo" and ending with ".conf", etc, get read).
More concretely, there are currently two packages NetworkManager-config-server (which contains the server-specific /etc/NetworkManager/conf.d/00-server.conf) and NetworkManager-config-connectivity-fedora (which contains the more-or-less desktop-specific /etc/NetworkManager/conf.d/20-connectivity-fedora.conf). But every file in /etc/NetworkManager/conf.d/ gets read, regardless of name, so it would not be possible to merge those files into the main NetworkManager package using the rules given here. (Which we probably don't want to do anyway, but there are probably other packages with similar file naming issues.)
Really, nobody is going to see your comment. We don't use talk pages as a means for communications, when we have all of those mailing lists and IRC channels and an existing packaging committee ticket. Any of those would have a far better chance of reaching someone. I only happened to see your comment because I happened to click the "watch this button" when I created the main page. I'm pretty sure nobody else would have seen that.
I've tried to bring your question to the attention of someone who can answer it, but it would still be better to send a message to the packaging list or file an FPC ticket.