No, and systemd would not add compelling features to the Hurd, since the Hurd already provides most of the advertised advantages of systemd, but cleanly integrated into the system — and has been doing so for decades.
Some of the reasons for that are discussed in this article: http://www.draketo.de/light/english/free-software/some-techn...
If you want performance from the Hurd, run it in a qemu VM so it profits from the caching algorithms of the Linux host. Then performance is actually pretty good — and you still gain most of the advantages of using the Hurd as OS.
No, it has an initialisation server (helpfully called init): https://www.debian.org/ports/hurd/hurd-doc-server#init
I'm curious to know what made you wonder whether it did, and whether you would consider that a positive or a negative (and why).
No, it has an startup server (helpfully called startup), since 2015: http://git.savannah.gnu.org/cgit/hurd/hurd.git/tree/NEWS#n86
Also, how's the performance? The last time I tried Hurd the performance was atrocious.