Dont't get me wrong, you might have more experience.., but I actually don't think that it is enough to have experience, I am pretty sure that you need to have a qualifivcation if you want to apply for a visa, unless it is the working holiday one. It will definitely not be enough to apply for more than a working visa, for residence you will have to provide INZ with your qualifications, and as far as I remember, you will have to do so for a work visa, too.
I don't want to discourage anyone, but you make it sound a bit too easy.., and they are just tightening the rules so that New Zealanders will get the first pick if they are available.