... you'll realise that in Australia it's better left to the pilots.
Bloggs & I had a conversation yesterday evening taxiing at SYD regarding what a good job the guy on SMC was doing. We both agreed that as pilots, whilst we reckon we've got "it" skun, neither of us could have stepped in and organised the plethora of taxiing aircraft as efficiently.
I reckon we pilots don't know, what we don't know about "controlling" multiple (large numbers of) aircraft.