Jay,
As you know, station identification is mostly for enforcement purposes, should a station inadvertently cause interference. Anyone hearing the station can then identify the source of the interference.
Obtaining a waiver for station identification is possible when the station can easily be identified by some other means, such as being the only licensee on the frequency for more than 50 miles. [only a guess]
The Commission staff has adopted policy for this and many other issues, but policy is not normally published.
The original post was from Martin, GA, a town of less than 400 persons, about 50 miles outside Atlanta. The likelihood of getting a waiver there would be much greater than at Pittsboro, IN due to the increased population and frequency reuse near Indianapolis. It all depends upon how easily the stations would be to identify, by means other than traditional station identification.
And yes, I have gotten station identification waivers in the past, for some systems with more than 50 locations. I am 74 now and retired, so I have no current examples to offer.
Someone who is serious about being in the Land Mobile business should develop a relationship with one or more FCC staff Engineers, by calling the FCC public information number and ask to speak to an Engineer. Ask important questions like this and keep their name and number for future questions and clarifications. In addition, visiting the Commission offices every few years to press the flesh and put a face to the voice on the telephone will also help.
Also, there are many retired FCC engineers and lawyers, who are private consultants, and will assist your business and clients, for a price.
Keep in mind, the FCC staff rarely sees or communicates with actual licensees, or service personnel, and mostly communicates with lawyers, who claim to represent licensees. The lawyers are often looked upon as hired-guns, and do not always represent the best interests of the licensees. This is why the radio users, licensees, and service personnel should develop independent relationships.
Good luck