That's not how the change in law works.
right now you're broadcasting a unique ip adress that any one with a simple piece of software can read to know what city you are in, and who your ISP is. Before when a copyrite holder would ask your ISP who a person is attached to an ISP number they have reasonable proof is stealing from them, your ISP would say "Fuck off and leave me alone". Now with just the smallest change to legislation, your IPS has to reveal your identity to almost anyone who asks "Who the damn hell is this?" and then they the righteousness take up a civil action against you for downloading such great works of modern cinema as Wolverine origins of BattleField Earth.
Your ISP doesn't care. They don't monitor internally. They just hand out names.
Your bio says that you are in IT.
I spent a few hours researching until I had the idiots guide to diverting your browser and/or filesharing utility through a free proxy, which is piss easy, but if you actually know what you're doing, then I'm guessing you could mask your ISP Number a thousand thousand times better than anything i could find though google.
Right now.
Setting up a paid proxy for New Zealanders would be money in the bank. You'd just have to set up/hire some over seas servers and you'd b good to go.