No. Please no....
This actually fills me with dread.
systemd is an abomination we're forced into having to deal with. It already breaks systems by starting services out of order ('hey, lets start your application before we start LDAP' being a particular bug-bear). The thought of random UIDs/GIDs being assigned <shudder>.
If it stays a laptop module to be installed by paranoid people then fine - but don't let it anywhere near Enterprise servers. I NEED those types of servers to come back up unattended.
This isn't so much as a solution looking for a problem, its a solution looking to CREATE a problem.