With a new heir to the throne at the same time as we're losing fundamental freedoms and privacy, it's timely to be having a conversation about a constitution - since we lack any formal "one-stop" document defining citizens' rights.
Sure, there's Te Tiriti, but that's an agreement between peoples at best, between Maori and the Crown at worst, and is a piece of string when it comes to "rights".
Then there's the Bill of Rights Act, which - along with gender and race and children and other "parts" of the rights equation - is a reflection of United Nations globalspeak; a good start, but somewhat sanitised by process and not necessarily apt.
Regardless of how many commissions we have examining breaches of this or that, there is no robust over-arching framework to tie things together. Nothing collectively agreed to stand on, and by which to fairly judge dissent.
Take the spying/privacy debate. Here, such laws are an exercise in executive power wielded by right of governance; and with no single mechanism to challenge legislation except within Parliament itself, if it's not defeated there, tough.