What if the Australian Senate rather than being an elected, almost co-equal chamber with the House of Representatives, was instead a weak, appointed chamber.
I am thinking here not of the House of Lords, which being an hereditary chamber in a unitary state is not an appropriate comparison to Aust. I instead am thinking of the Canadian Senate which is appointed by State Govts with a bias toward smaller states, but not all equal numbers (Ontario and Quebec still get more than other provinces).
I would assume that at the start of Federation this second chamber would have fairly equal powers to the Lower House, but over time would have its powers reduced (no democratic legitimacy etc). Today in this ATL it might have the power to block supply bills for 28 days and all other bills for only a year or so.
How would Australian political history be different? Obviously no Dismissal in 75, but are there any other major differences that would occur.