I think for that to happen you would need to find a group of collectors who are disengaged from the local pinball politics that goes on down here and are not only willing to put up machines to bolster attendance numbers but would also need to withstand the fallout that will occur when they refuse to allow the local hierarchy to interfere with its organisation and implementation.
The current existing public pinball events down here are typically held for an ulterior motive (promoting themselves, promoting the local forums, flogging off beat up container pins in a public auction) rather than the primary goal of promoting pinball itself to the general public. This is why they lag behind our North American/European counterparts and always will.
Newcastle Pinfest may be considered by some as the front runner in a very small existing field but they need to sever the apron strings from the local forum if they ever want to attain anything remotely approaching world's best classification.
Above all, pinball in Australia needs to expand dramatically beyond its current clique status and place a much heavier emphasis on attracting new entrants. Broaden the userbase, lose the closed shop hierarchy mentality and the overseas pinball manufacturers will see untapped potential market growth and begin to take a much greater interest in what is happening in the antipode.