Dick,
I think many people are a bit ambivalent towards ICAO, HOWEVER, they do set the Rules and we do agree to follow them.
Alphabet Airspace is one of those rules. No matter what we think of the principle, it is a Rule and appears to be here to stay ... and I'm all for standardisation.
However, my problem sits with the implementation of ICAO Airspace ... which has nothing to do with ICAO, but is a function of the member States...in our case, Australia. If what you say is correct about the UK, then my hope is that we don't go down that road. I'm sure there's enough options within the Alphabet to suit most volumes in Australia ... without butchering them.
And, finally, down to specifics....
In the specific case of link airspace above Broome/Karattha ...taking all things ( models, studies, calculations, reality checks, reports, findings etc) into consideration, I don't believe that the implementation of non-surveillance Class E airspace is appropriate.