+* implement Distribute= in socket units to allow running multiple
+ service instances processing the listening socket, and open this up
+ for ReusePort=
+
+* add a timelimit to generator invocation
+
+* socket units: support creating sockets in different namespace,
+ opening it up for JoinsNamespaceOf=. This would require to fork off
+ a tiny process that joins the namespace and creates/binds the socket
+ and passes this back to PID1 via SCM_RIGHTS. This also could be used
+ to allow Chown/chgrp on sockets without requiring NSS in PID 1.
+
+* New service property: maximum CPU and wallclock runtime for a service
+
+* introduce bus call FreezeUnit(s, b), as well as "systemctl freeze
+ $UNIT" and "systemctl thaw $UNIT" as wrappers around this. The calls
+ should SIGSTOP all unit processes in a loop until all processes of
+ it are fully stopped. This can later be used for app management by
+ desktop UIs such as gnome-shell to freeze apps that are not visible
+ on screen, not unlike how job control works on the shell
+
+* machinectl bash completion is missing
+* busctl bash and zsh completions are outdated
+
+* cgroups:
+ - implement system-wide DefaultCPUAccounting=1 switch (and similar for blockio, memory?)
+ - implement per-slice CPUFairScheduling=1 switch
+ - handle jointly mounted controllers correctly
+ - introduce high-level settings for RT budget, swappiness
+ - how to reset dynamically changed unit cgroup attributes sanely?
+ - when reloading configuration, apply new cgroup configuration
+ - when recursively showing the cgroup hierarchy, optionally also show
+ the hierarchies of child processes
+
+* transient units:
+ - allow creating auxiliary units with the same call
+ - add field to transient units that indicate whether systemd or somebody else saves/restores its settings, for integration with libvirt
+ - ensure scope units may be started only a single time