Yes, of course, a very good point.
My calls usually go something like this if it is not too busy:
Departing
G-XXXX at the hold Little Snoring intending to line up runway x
- waits enough time to see if anyone is interested,
G-XXXX is lining up runway x Little Snoring,
G-XXXX is rolling runway x, intending right turn out or whatever.
Arriving
G-XXXX is joining crosswind (whatever) at 1,000 feet on the QNH 1016 for runway x at Little Snoring,
G-XXXX is turning downwind at Little Snoring for runway 32,
G-XXXX is turning final at Little Snoring for runway 32,
you can add in helpful comments like joining crosswind, see one ahead mid downwind etc.
It may not be CAPology, but it seems to me if we all thought a little more about enabling anyone else to build a picture of any traffic it would all run that much more smoothly. It is the one time, unless the radio is very busy, to talk more, not less.
It might not prevent someone causing chaos going the wrong way around the circuit but at least it gives them a chance for the penny to drop that they are about to make a prat of themselves
, (we have all done it I suspect) and to worry when you tell them you cant see them.