+* optionally create watched directories in .path units
+
+* Support --test based on current system state
+
+* consider services with no [Install] section and stored in /lib enabled by "systemctl is-enabled"
+
+* consider services with any kind of link in /etc/systemd/system enabled
+
+* show failure error string in "systemctl status"
+
+* make sure timeouts are applied to Type=oneshot services.
+
+* Maybe implement "systemctl mask" and "systemctl unmask", but not
+ document it? When doing that add switch to make this temporary by
+ placing mask links in /dev.
+ Consider moving the actual fs operations into systemd behind a D-Bus
+ interface, to make namespaces/containers/remote connections work properly.