The department of Social Services just published a review of the current PPL. The consultations happened between Jan and Jun 2013.
You can find it here
It mostly find that the payment must be increased to replacement wage levels or a percentage of replacement wages, and increased from 18 to 26 weeks.
ETA it also suggests that the gvt should keep finding the national minimum wage component while employers would fund the balance.
There are suggestions about removing the means testing that discriminates against women with high income especially main or sole breadwinners.
@kw123 I thought this would be of interest