PLovett sums it up very well. There are no "positive" votes in aviation reform, all the punters care about is Sydney aircraft noise and a second airport. As for GA aviation, its got about the same vote winning potential as prison reform.
What saddens me is the loss of jobs, investment and GDP growth that could come from a revived GA and recreational sector. Things like adventure tourism and suchlike that will never see the light of day thanks to CASA, Nimbys and the greens.