I don't want to patronise but you can't compare the duties outside of nats to those inside as most of the airports are far busier than non state airports.
We feel it is dangerous having a controller answer outside calls, undertake met obs etc whilst controlling. Also safety surveys etc are not failsafe and is not the solution to this that prospect thinks it is. There is always somebody stupid enough to sign things off for management.
We need atsa's, end of story.