I'm not sure hiding the Rego in anyway will help in this day and age. ATSB published the details within hours and asking around the aerodrome by a reporter will almost certainly yield the details. And there is the danger, as noted by a previous poster, of the
Streisand Effect.
The strategy of getting someone to talk to the press is likely to work far better.
This reminds me of the QF1 runway overrun at Bangkok, where Qantas released photos of the left side of the aircraft to the press, saved the media going out to take photos. They may taken photos of the right side of the aircraft, where the real damage was.
By the way I think the questions I postulated are insensitive and inflammatory, but this is how much of the media works.