Neither the concierge nor the overseer have a replication timer, because the people who originally made them for some reason just couldn't imagine that someone would haul off and kill them.
Anyway, I'll hop on and give you a platoon concierge in a minute, but resetting the overseer could screw up some people's missions down there, so we might wait a day or two on that one. She doesn't serve any vital purpose at the moment anyway.
Edit: Concierge is back.