Current status

Recent enhancements
When "stop"ping a service, poll until process exits
Optional rc.shutdown watchdog timer, which terminates rc.shutdown if the watchdog fires
chkconfig(8) to control rc.conf.d/foo config files

Future work
Ability to run scripts from service A to service B
Gives most of what people seem to want in run states
Have sample implementation
Need a clean way to store current "service name" (equivalent to run state #); considered using a sysctl(3)