McLaren's handling of Piastri and Lando Norris dominated Formula One last season, as Norris came from behind to take the championship from his teammate.
The English team are one of the few major players on the grid who do not have a No.1 driver and attempt to have complete fairness between the two.
But their pursuit of "Papaya Rules" reached its controversial zenith at Monza last year when Piastri was ordered to let his teammate pass following a slow pit stop for Norris.
McLaren have arrived in Melbourne in a different position to last year with Piastri tipping Ferrari and Mercedes to be the fastest cars under the new regulations.
Reminded on Thursday he'd lost the championship by 13 points after contentious McLaren tactical decisions, Piastri quipped there was "a lot to digest" in the question.
"I have nothing to prove, I am certainly not going to have a rebellious streak or anything like that," the Australian said.
"A pretty quickfire way to make sure you're not going to win a championship is go against your own team. I don't think that's a very wise move.
"But definitely we have had discussions and worked on things we can do better this year."
Piastri said his relationship with McLaren had only got stronger out of the tough end to last season with discussions over how they handled several situations.
"We are always going to race for the best interest of the team," Piastri said, when asked if he would be racing for McLaren or to prove he was not a No.2 driver.
"We've always had freedom to race for our own individual results as well.Â
"Maybe on some occasions we've not always made the perfect decision, but the important part for me there has never been bad intentions with that."
Piastri will without doubt be the busiest driver in Melbourne this weekend.
He was one of the six made available for full press conferences this weekend, while there have also been numerous sponsorship, interview and television spots.
No Australian has made the podium in the 30 years it has been at Albert Park, with Daniel Ricciardo finishing second in 2014 before being disqualified due to illegal fuel flow.
But Piastri maintained this weekend was no different to any other race for him, even if he'd repeatedly been asked what it would feel like to win his home race.
"If I had a dollar for every time I got asked that I would be a few dollars richer," he joked.
"It would be really special. Every driver wants to win their home race. That's no different for me.
"Obviously there is a lot of extra support. But in terms of trying to do my job and get the best out of that, that's the same as anywhere in the world."
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