I had a similar problem with my Ten-Tec Argonaut - the antenna, DC power, and key connectors
on the rear panel were all RCA jacks, and it was easy to get a plug in the wrong one in the dark,
or bending over the rig from funny angle. Only once have I plugged the DC input into the antenna
jack, and fortunately I was on the 10A Ten-Tec supply which shut down before melting the input
coil.
But with the Power Poles you can assemble them together in blocks with some pins rotated so
that they won't match with other combinations. For example, a RED/BLACK pair for 28VDC
could be stacked vertically rather than side-by-side, so it couldn't mate with the standard 12V
connector (unless the pins were taken apart) but still maintained the same genderless advantage.
By mixing multiple circuits in, for example, a 2x3 arrangement, you could provide power, speaker
and perhaps (at least at HF) antenna in a single plug that would make it easy to swap out
rigs.
I suspect there are too many options to come up with any sort of recognized standard beyond
a small group with a particular application, but it is worth considering when you do need something
like that.