David Pocock is widely regarded as one of the finest talents in World Rugby now, a mainstay of the Australian team who reached the final of the World Cup back in 2015.
Crotty will miss the second Bledisloe Cup test in Auckland next Saturday.
"It concerns us, definitely", All Blacks coach Steve Hansen said.
Jack Goodhue crossed for their second and Beauden Barrett the third as the Wallabies' set-piece buckled and Brodie Retallick secured a try-bonus point. "We respect what they are building towards, it's going to be a hell of a game".
New Zealand's Kieran Read shakes hands with Australia's David Pocock.
Hooper is returning from a hamstring injury suffered against Ireland eight weeks ago and says his meticulous rehabilitation program at both the NSW Waratahs and Wallabies had him ready to go.
The Wallabies are sweating on Folau's fitness for Auckland after he limped off in the 65th minute.
Inside centre Crotty was knocked out in a clash of heads with new midfield partner Jack Goodhue in the first half of the 38-13 rout at Sydney's Olympic stadium and played no further part in the match.
As expected, Australia unleashed their potent backline early, desperate to put on a show for the crowd of 66,000 Sydneysiders.
In the opening minutes, Israel Folau received the ball on the wing during a Wallabies attack and he was on the end of a heavy but fair tackle from Waisake Naholo.
They held on to prevent the Wallabies crossing the line in the first half, restricting them to penalties for Reece Hodge and Bernard Foley.
Despite the late lapse, Michael Cheika's men enjoyed a 6-5 advantage at the break - after trudging to the same sheds trailing 40-6 at half-time in last year's corresponding fixture.
New Zealand then ran away with the match after Haylett-Petty dropped the ball in front of Barrett, who soccered it forward for a try then added the conversion.
He praised Australia's first-half defence but was unimpressed by the Wallabies second-half showing.