Well said Puece.
The most life-threatening situations I have been in in Dick Smith alphabet soup airspace have been unannounced VFRs popping up in front of me, not IFR. Had they not had [optional] transponders, things could have got very close.
Dick, mandate transponders in all aircraft within 30nm of CTAF Rs and you'll have my support for mandatory TCAS.
Secondly, no comment on the A380 pilots looking out the window for lightys to avoid?? or indeed the whole "VFR operate in a different world and so should be ignored"/Class E thingee? Cat got your tongue old chap?