+* unset container= in PID1?
+
+* if we can not get user quota for tmpfs, mount a separate tmpfs instance
+ for every user in /run/user/$USER with a configured maximum size
+
+* default to actual 32bit PIDs, via /proc/sys/kernel/pid_max
+
+* add an option to make mounts private/shareable and so on, enable this for root by default
+
+* internal restart counter for units (focus on auto-respawn)