Oh dear oh dear, this thread is about to spin out of control!
Mandate WAAS?? How many people have lost their lives to a botched approach to BN, SY or ML? How many people might have been saved if their pilot(s) had access to a WAAS provided LPV at Lockhart River, Mt Hotham, or Benalla? Mandate indeed!
L1/L5 benefits everyone. We get LPV, Transport gets even closer to autonomous(I hope, never!) Agriculture gets the accuracy they can use and industry can access millimeter accuracy for civil works without need of setting up a DGPS constellation. The bloody thing is already up there. The ground constellationis already in place(never knew that) all that needs be done is for the Australian government to pony up for the rent of the bentpipe transponder.