KFAX (1100) hasn't been in the running for decades, but that's due to its programming. KTRB (860) never should have been moved in from Modesto. Even when it was in Modesto, it was simulcasting a Fresno FM station.560 is not a good-as-the-rest night signal, and 860 and 1100 are just not in the running for day and night full market coverage. Heck, even the 740 signal is rough up towards Santa Rosa at night despite having a transmitter site to the north side of the bay.
Much of the growth in the Bay Area in recent years has been to the east, in Solano county past Vallejo, in Contra Costa county on the other side of Mount Diablo, and past Livermore, spilling over from Alameda county into Tracy and Manteca in San Joaquin county. That's driven by availability of space and less expensive housing. The old trick of positioning a DA so that it blankets San Francisco and the Peninsula at the cost of coverage to the east doesn't work any more.