Rotorblades,
I can see where you are coming from with your suggestion.
Personally I usually stay on centre whilst in the CTAF and know exactly what you are talking about, but I think a consensus needs to be reached amongst ALL controllers before you start asking us to make a new call.
For example, will every second controller from Melbourne Centre ask me to say again due to the unfamiliar call (Im all for plain English in certain cases and certainly not a standard phraseology Nazi), or will some of them mistake the call for me having changed to CTAF?