This is continuing to be an extremely interesting discussion. I agree, something needs to be done to allow a user to adopt a 'preference' (notice I didn't say 'standard') that suits their system operations.
The analogy to metric vs imperial is a classic. Having grown up with imperial and switching to metric as an adult, I've got no idea how that other system is still in use (I can comfortably use both, but I know which one I prefer). Anyhow, my 'metric' is that middle-C is the first C note below A 440Hz (440 cycles per second

) But again, I digress, 25.4 apologies.