This is a tracker bug used to track all the noteworthy improvements made inside the systemd-love overlay that could be merged into the Portage tree.
Don't comment here.
As previously emailed to Fabio, and other conversations on -dev and -core and with devrel, I will post this here to make it as clear as possible.
base-system gives a blanket nod to systemd files. We just won't maintain them or support them, we expect the systemd herd will assist here. We have enough things to worry about. In the future as herd priorities change and membership potentially changes, we might invest our time in systemd support.
This is obsolete in this days