Gom,
They checking weather reports, flight plans, and routing on night flights to see if ya'll are seeing enough lights where you fly? They done any night flights with you to see for themselves you are complying with the rule?
It is not how often they show up but what they do when they are there.
I am not suggesting they become the Gestapo by any means but look into areas of concern that are known factors in these accidents we seem to be having due to the same old causes year after year.
Checking paperwork and duty hours logs and looking in the maintenance log or doing an audit on training documentation is not going to make that big a change in the safety performance. Monitoring the flight activity and all the operational issues will.