I would have expected at least 1 initiative that you could identify as being "yup, a Turnbull government did this".
Howard had the GST, family tax benefits, several large income tax cuts, sale of Telstra, Future Fund etc etc
Rudd had the GFC stimulus packages, school halls, NBN.
Gillard had the Carbon Tax/Pricing, NDIS, Gonski education funding
Abbott had.... err.... temporary deficit levy on high income earners
Turnbull has....submarines designed today, to be built by 2050 when the technology is redundant?