SUMMARY
Network Connections currently supports Network Manager as a backend, and it does so well. Currently there is no support for systemd-networkd in any DE including Plasma, despite systemd being ubiquitous. Even basic support would thus be a major differentiating factor for Plasma, and it would enable easier desktop use of systemd-networkd.

I'm aware that this is likely a very major task for a (currently) nieche use-case, but maybe this issue can also be used to gauge if there is any interest for this.

IMO even starting at displaying network status and managing WIFI would already be sufficient. Users who wish to use networkd at this time on their Desktop can be expected to understand limitations in GUI integrations for that.

I found this earlier request for this: https://bugs.kde.org/show_bug.cgi?id=417168
I apologize for opening such a similar request again, but IMO enough time has passed since to reconsider this. Networkd is widely available and stable and the main hindrance to adoption on the desktop is a lack of GUI support.

STEPS TO REPRODUCE
Remove NM and set up systemd-networkd.

OBSERVED RESULT
Nothing.

EXPECTED RESULT
System settings and possibly the tray should be able to display network status and possibly allow basic settings, particularly wifi connection management.

SOFTWARE/OS VERSIONS
All

ADDITIONAL INFORMATION
Feature request