Frank I think that would be better than E over D in Broome because you'd then have the freedom to manoeuvre as required for traffic separation.
I'd be interested to know how big the Class D zone will be. If it is smaller than the current 30nm MBZ (yeah it's not called an MBZ but that's what it is) then I can see problems with VFR aircraft operating outside the zone and possibly over the top of it without talking to anyone, where as at present everyone is required to monitor and broadcast within 30nm of Broome.