It's definitely a competition between Abbott and Morrison.
You could make an argument for Fraser, but that would be purely on the fact that he got into power initially in a completely undemocratic foreign-backed coup. His actual governing was relatively reasonable.
I hate that I only learned about this after I got out of school. Love to tell us about all the corrupt govs in the world, hate to tell us that time and elected official got replaced because of a bunch of shitfuckery and a bunch of CIA dollars.
Mr Fraser privatised Medibank (the original Medicare). Universal healthcare was the dream-child of the preceding government. The Liberal Party hated it and tried to block it. One of the first things they did was kill it. I fully recognise that my views of Mr Fraser were the product of my childhood - where my political views mostly boiled down to "Liberals are evil and Labor are the good guys" thanks to my parental influences.
It turns out that universal healthcare is pretty popular, though. It was the main issue that kept the Libs in the wilderness for over a decade. They had to promise not to kill Medicare to ever get another shot at government.
Fraser was uncompromising on things like refugees so he gets some credit for that as Howard/Fisher did for gun control. I don't think Howard was proud of the children overboard stuff and not sure Fraser would have done that but he governed in different times. I think there is at least one PM since who had no moral compass at all, like clinically lacking, there was just the mask but I am struggling to remember anything he did.
I had several disagreements with Mr Howard, but I believe that despite those differences, he really was trying to do the right thing for the country.
I liked Mr Turnbull. In an alternate universe where he was permitted to actually lead the nation and wasn't held down by his party, I think he could have been one of the great PMs.
I didn't have a lot of time for either Mr Abbott nor Mr Morrison. Both were bad for the country. I honestly can't recall a redeeming thing to say about either of them.
I think I could have agreed with you on Howard except for two things. Children overboard was not just had in itself, but it basically set Australia on its now 20 year history of politicisation of refugees' lives. It was bad enough in its own right, but looking at the long term ramifications of his actions, I rate him as one of the worst we've ever had, even if he's not quite in contention for the #1 spot.
Turnbull I agree with you. In an alternate universe he could have been one of the best LNP leaders we've ever had. But the fact is that he had no spine and was more than willing to throw the country and his own personal beliefs aside for the sake of retaining power, and I cannot forgive him for that.
Immigration and asylum seekers have been politicized my whole life. When I was little, it was "wogs" - though which nationality that referred to was confusing. It was originally Italians and Greeks after World war 2, but later evolved to Lebanese. Then it was the Vietnamese/Asians. Then it was Middle Eastern / Arab nations. I think we're still hearing about Sudanese gangs yeah?
It's an unending cycle that has showed no signs of going away. Ned Kelly resorted to crime because of being discriminated against for being Irish. Yes, Mr. Howard absolutely tapped into that cycle with the Tampa incident, but he didn't start the fire. It was always burning like the world's been turning.