Comment One question... (Score 1) 555
Can Systemd be used to start one script that do all the actual starting etc, and just sit back and shut up?
Right now Sysv init can be used to do just that. Get started by the kernel, then fire up whatever process is listed at the requested runlevel (said process will handle the rest). Then sit back and wait for the shutdown to the called.
If Systemd can be used in this manner, it is a full drop-in replacement for Sysv init.