IF you had only independents they would form alliances and you'd have a new Leader every few weeks, like PNG. Parties have Policy Platforms and capacity for More research than individuals. IF any group is changing Leaders constantly they are Unstable and Have lost Policy Direction. WE in OZ don't vote for the Leader Directly. It's up to a Party OR the Parliament and a combined vote of BOTH Houses is an option on Important Matters.
. Qld STATE government is Unique in having NO Upper house, and only in Qld is the LNP a single party.. It's Pauline Hanson's ONE NATION Party but I'd like that to be tested in a Court of Law at some stage. She seems to Behave as though she's some Kind of Sovereign Citizen to whom the LAW does not Apply. A pretty Risky BET, I would suggest. Nev