+* add a new command "systemctl revert" or so, that removes all dropin
+ snippets in /run and /etc, and all unit files with counterparts in
+ /usr, and thus undoes what "systemctl set-property" and "systemctl
+ edit" create. Maybe even add "systemctl revert -a" to do this for
+ all units.
+
+* sd-event: maybe add support for inotify events
+
+* PID 1 should send out sd_notify("WATCHDOG=1") messages (for usage in the --user mode, and when run via nspawn)
+
+* nspawn should send out sd_notify("WATCHDOG=1") messages
+
+* nspawn should optionally support receiving WATCHDOG=1 messages from its payload PID 1...
+
+* consider throwing a warning if a service declares it wants to be "Before=" a .device unit.
+
+* "systemctl edit" should know a mode to create a new unit file
+
+* there's probably something wrong with having user mounts below /sys,
+ as we have for debugfs. for exmaple, src/core/mount.c handles mounts
+ prefixed with /sys generally special.
+ http://lists.freedesktop.org/archives/systemd-devel/2015-June/032962.html
+
+* Add PassEnvironment= setting to service units, to import select env vars from PID 1 into the service env block
+
+* nspawn: fix logic always print a final newline on output.
+ https://github.com/systemd/systemd/pull/272#issuecomment-113153176
+
+* make nspawn's --network-veth switch more powerful:
+ http://lists.freedesktop.org/archives/systemd-devel/2015-June/033121.html