want a service milestone to indicate self-assembly/configuration is complete
in S11 Oracle added an SMF milestone which comes online when system configuration and self-assembly is complete (that is, when it's safe to consider the system configuration to actually be as intended). This is a very useful thing, and we should have one.
It's not clear to me where it should fit in the ordering of milestones. (It likely depends on whether sysidcfg is a dependent or dependency), but it should certainly precede multi-user