All I was asking for was for GA pilots to talk to the approach controler if flying near to the approach path of regonal airports and pointing out that this would avoid disruption to the CAT sector and reduce the pressure for more CAS.
In the case I quoted if the "unknown traffic" had talked to the ATC unit and had his mode C readout checked there would have been no conflict (his altitude might have been capped for a few miles) but I don't think that this would have been too much trouble to him, if the aircraft had not had a transponder I would have assumed that on such a nice afternoon it was a non-radio aircraft and I would have not started this thread.
I don't want to see an airspace grab by the bean counters and the post was inteded to highlight the fact that if GA won't cooperate with CAT then this will just give the bean counters more ammunition to fight for more CAS.
The understanding of the way that GA pilots opperate is deminishing in CAT as most of the new airline pilots HAVE NEVER held a PPL and have only flown small aircraft under strict supervision of the training schools and so have a very blinkerd veiw of light aviation.
So the attitude of MOST of the newer airline pilots is that they want to be kept away from light aircraft simply because the don't understand GA or the way it opperates.
The situation will only get worse as the requirments to get an (F)ATPL go from 250 hours flying time to something around 80 hours with the rest being done on a simulator.