If you largely supported what Helen Clark and Labour did in government from 1999-2008, but just want a "cup of tea" for three years, and a few tweaks in the other direction, then National is your party. That's what this government is doing - little different.
If you largely opposed what Helen Clark and Labour did in government from 1999-2008, and want a net reduction in taxation, reduction in the size of the state, then National is NOT your party (and frankly neither are any of the others in Parliament). Only Libertarianz has done that and would do that.
If you want to grow the size of the state, so that it takes more money to spend on "public sector employment" you can choose Labour, "Maori" you can choose Maori Party and "all you can think of" you can choose the Greens.
In fact if you want the state to grow in the areas of telecommunications and roads, you can choose National.
National is a conservative party. It almost never reverses what Labour does.
The Labour Party has set the political, economic and social agenda of New Zealand since 1935.
The National Party, with the exception of trade union membership, has adopted that agenda and sat tight with very few exceptions.
So why would anyone voting National expect any significant change?