I guess personally (and I think many would agree), I would like to see some safeguards of somesort, for example id never like to be trapped overseas or not be able to travel internationally for a family emergency because the PM slammed the border shut. Or face loosing my basic rights for refusing a vaccine. Anyway that's a whole new convo that I am not getting into lol (check above replies).
Those safeguards exist. The power to implement restrictions comes with the caveat that restrictions must be justifiable and proportionate - the government was given that message in no uncertain terms when courts found that the way MIQ was implemented was not lawful, as it prevented New Zealanders from travelling to their own country and failed to balance the need against individual circumstances.
I personally think many of the restrictions put in place were not proportionate but never got challenged on a big enough scale to hold the govt to account. Plus the social condition of the general public though the govt and media made anyone who questioned the restrictions a "covid denier". Look at MIQ, it was ruled unlawful in the court case launched by grounded kiwis, but it still happened for years prior, and when the court ruled against the govt there was no apology or hardly any mention of it in the media at all.