Hi, I dont really think we need a senate, a single house legislature should be able to confirm cabinet appointments. Keep in mind that the method of voting should produce a pretty diverse house.
From the 2019 election voting percentages Libs 27.99 Country libs /Libnats[Nt /queensland] 8.93 Nationals 4.54 Labor 33.34 greens 10.4 united australia 3.43 one nation 3.08
Now, the parties are likely to change a bit, as it tends to favor the establishment of other parties, but you get the idea. Domination by the executive almost impossible I would have thought, and legislation might garner support from a much wider range of views. Much less of the winner takes all.
