Given that the repeaters don't overlap you might benefit to setup simulcast even though you're not syncing the transmitters. Anywhere you do have overlap, like on the ridge tops, you're going to get out of sync signals but I'm guessing that is a low percentage of coverage area. If you could get one transmitter to capture your receiver, even just a little, you should have mostly intelligible reception at those locations. Maybe walking down from the ridge top a little ways.
Alternatively, do you have a location that can cover all the ridge tops? Use a different transmit frequency to cover those spots that the psuedo-simulcast causes interference at. Instead of the many different channels you would end up programming and using with separate input tones, you would now have only two, the main channel and the secondary transmitter channel.
The receiver at this alternate site could be the same frequency and voted, or just have transmit only since the other voted receivers would be providing coverage.
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Those commands in your linked message look to be easily scripted from an external control script. I haven't played with the RTCM's yet but can you somehow see which site is being voted from the command line? Doesn't AllMon do this? If so it should be relatively easy to watch the voted sites and pick the appropriate transmitter. Might need a little special logic built-in.
Brett KQ9N