The idea of reclassifying Trans-Tasman flights as domestic rather than international is a good one – with the proviso that bio-security controls are maintained.
New Zealand and Australia have the strictest bio-security border controls I’ve encountered for very good reasons. Both are bordered by sea which makes it more difficult for accidental incursions by unwanted species or infections; and primary production is very important to both economies.
The ability to travel more easily across the Tasman has many advantages but it mustn’t come with any risk to our plants and animals.
There are still some things in each country which the other doesn’t want and if our Trans-Tasman travel is freed from passport controls both countries will need to ensure that bio-security controls aren’t relaxed too.