Thanks Scott. Yes, necessity is the mother of invention.
Giles, re
If your problem is RT loading, can I suggest that instructing arriving aircraft from APP to "..report callsign only to TWR" works well, and having departing aircraft "... monitor TWR" is used successfully at a wide range of European airports.
Concur. Many aircraft do report on final with callsign only, but equally, many embellish a bit, though it's usually pretty brief, as is our "ready" call for departures.
I think your second paragraph is quite relevant to the Dununda discussion!
Cheers
AA