Going back now to the original question - "should usfs and blm channels be listed differently in the rrdb?"
let me give my short and sweet answer
Monterey County, California (CA) Scanner Frequencies and Radio Frequency Reference - this is the RRDB page for Monterey County in California - the is no Quick Jump for "federal" - but Los Padres National Forest (LPNF) covers a large area in Monterey County - as does Fort Hunter Liggett - so I would suggest creating a Quick Jump labeled as "Federal" - and place the LPNF and Fort Hunter Ligget channels there - or just place some text there - saying for example - "for LPNF channels - see Santa Barbara County" - or provide a link to wherever the LPNF channels can be found in the RRDB - or maybe provide a link to the RR Wiki - or do whatever can be done to give a heads up to the casual scanner user that LPNF and Fort Ord are big players in Monterey County
[Looking at the Monterey County RRDB page again - how about changing the 'Military' QJ to a 'Federal' QJ and adding the LPNF freqs there]
This suggestion probably wont help anyone that uses a gps or zip code based scanner; but it could help all other scanner users.
Are you saying you would like to break the federal listings down into the county pages? I can't think of many national parks, national forests and BLM districts that are located in a single county. The exception being some of the very small NPS units, such as Tonto NM close to us and all the ruins, historic and memorial sites. We are often in one county and hearing radio traffic from several counties away, especially on federal and state systems. When I think of Yosemite National Park, it does it matter it is in Tuolumne, Mariposa and Madera Counties are in that park? It is an exclusive jurisdiction, the state and counties have none, except when Congress gave some specific and limited jurisdiction in the Clean Water and Clean Air Acts. There aren't any county building codes and such. The CHP and the county sheriffs offices have no jurisdiction unless the NPS needs them for mutual aid under coop agreements. The same is true for Big Bend NP. The State of Texas and Brewster County, the largest by area in Texas, don't have jurisdiction in the park.
I have a couple national forest examples, one "just over the hill" from where late Hubby and I lived in California, the Inyo National Forest. We visited there for some great backpacking, 4WD travels and cross country skiing. The lands of that forest are located in Mono, Madera, Fresno, Inyo and Tulare Counties in California and Esmeralda and Mineral Counties in Nevada. Do you propose to redundantly list the Inyo National Forest system in each page of those 7 counties? The Humboldt-Toiyabe NF was just over the hill also, it is located in 6 counties in California and 13 in Nevada for a total of 19. The forest's system, with 4 nets, should be listed separately in all 19 counties in two states?
Late Hubby and I took a GPS scanner that someone else let us use on one trip. It was a mess! We missed traffic from repeaters that we could hear on our own radios from 100 or miles away. Think of the Central Valley of California with the Sierra Nevada rising to the east. When you are in the flats, say in the area west of Fresno, you might pick up many repeaters on the Sequoia National Forest, up to some on the Mendocino, the El Dorado and everything in between (sometimes repeaters on the Los Padres), including 2 iconic national parks. How do you take advantage of the opportunity to hear so much from a GPS scanner. Oh, and one repeater site, common to both the Angeles and Los Padres NF's could be heard all over the Central Valley.
In the entirety of the database we have large bins, federal and state systems for example, and we have small bins, one for each county. It sounds like you want to take the pieces in the big bins and dole them out to be put in the small bins. Do you want to remove Yosemite NP out of the federal listings and put it in each of the 3 counties within the park? Then the Inyo and Humboldt-Toiyabe NF's into 26 county listings?