The MBZ grouping that has taken place at both LST-MNE and LTN-LEO has been a great improvement. With the volume of fly-in-fly-out traffic that arrives from Perth I would have thought that anything less would result in a huge drop in safety.
I regularly cross these busy flight paths below 10 000
and always go IFR due to the volume of traffic. It's not such a problem when the overflying turboprops/jets are descending into LTN or Sunrise Dam etc as they are well above, but up around LST we are very much sharing the same airspace.
and traffic advice is essential.
I can't imagine the FIFO operators would be very happy with the proposed changes either, especially when Leinster turns into a mini Heathrow as it does from time to time.