It's important to get both the FAAA and AIPA in on this as well.Although I don't know how much help we would get from the company on this matter.They would or should be asking the minister on our behalf but don't bet on it.
also it would not hurt to approach your local MP and express your viewpoint.
The passport control is not the issue so don't get distracted by it.
It is annoying to get caught up there and when you are looking down at the lines snaking around the customs hall but the machine will get fixed sooner or later .
It's a dedicated crew channel to clear Customs and AQIS at every Australian airport that we need not one that we can share with passengers.