the area freq boundaries are designed mainly for high and medium air routes
High level freqs bear no resemblance to the low level freq areas, at least where I fly. In fact, the high level freqs are not even on the charts.
Certainly, there are advantages for having the boundaries on the charts. If you're not in the weeds, you know who to call and more importantly you know what freq other aircraft will be on (unless in the weeds on the Multicom
). Likewise, I see the (possible) advantage in knowing where the transmitter is. Over here, probably half the transmitters are shown anyway, being at airports. I can't see an issue with adding the non-airport transmitter locations on the charts: wouldn't increase clutter at all.
I wonder though whether Dick would fly around studiously tuning the nearest outlet JIC?