Unfortunately your posted comments have evolved to be more normal than exception in past years. A few comments which may be of interest:
DGIF: Original policy in 2000 using STARS for comms was their MDTs were to used only when circumstances required voice comms. However DGIF voice comms were common for some years after with the statewide dispatcher located in Richmond. When DGIF encrypted only occasional in the clear voice comms limited to coming on/going off duty were heard. I don't hear those anymore.
ABC: In past years infrequent in the clear voice comms were heard. However, you may remember the incident in Charlottesville that occurred when an ABC "sting" attempted to capture a suspect, who was a UVA student, who fled to her car thinking she was being kidnapped, assaulted or whatever. With 24/7 "breaking news" cycles, the story evolved to where the subject ABC agents and the agency itself were portrayed nationally in a very bad way. The state agency was sued and eventually resulted for a 6 figure payment to the victim. Subsequently, ABC voice comms totally disappeared, probably from a change in ABC radio comm policy.
DMV: In Div 1, on rare occasions a voice comm from one DMV agent to another requesting portable scales be brought to a designated location can be heard.
DCR: For years DCR voice comms were frequent and then nothing. Maybe they use MDTs or their own cellphones.
MRC: Normally because of affiliations to the selected Peninsula/Tidewater STARS sites, I can' hear them but like you rarely hear a MRC comm. I believe MRC comms as a rule typically are brief and not much on detail.
DMA: At one time about 5 years ago, on weekends I would hear DMA comms on occasion from, I assumed an Army Reserve activity in NOVA, Va. Beach or headquarters Langley/Ft. Eustis. Then no comms. Subsequently, a helicopter medical detachment was stationed at the Chesterfield AP. There is occasional activity involving usually a helicopter flying to another location. However a few years ago when the AF Reserve pilot ejected and landed in the mountains near Charlottesivlle, DMA helicopters from Chesterfield were active during the search effort.
DFP: Although not mentioned in your post, in my opinion, issuing STARS radios to these relatively few agency's individuals was a waste of taxpayer monies. The few comms I heard basically were chit-chat when driving to NOVA for whatever. My argument was using their cellphones and FRS radios would achieve the same purposes and not require a $5,000 each STARS radio for each DFP user. Of course, the DFP users were defended by their supporters, However, I remained unconvinced.
It looks like the current STARS voice comms situations most likely will not change.
John
W4UVV