Yep bloggsy. Our existing class G is the way to go. An upgrade to E brings in full atc separation for IFR in IMC but professional pilots like you do not need the upgrade. Only an incompetent professional pilot would make an error like the king air one at Mt Hotham. You would never do that so class G can remain. Only those yanks who only designed and built the FA18 would need the upgrade to class E.