Sure, I think the New Zealand flag could do with a spruce-up. The Union Jack doesn't mean a whole lot to me any more. My allegiance to the top left corner of our flag is limited to cheering for James Bond's parachute in The Spy Who Loved Me and some fondness for the English friends I've met since they came to live in Tauranga.
My main problem with the Union Jack is that it's really hard to draw - a complicated collection of reds, whites and blues that perpetually confused me as a crayon-wielding kid. Is it a cross on top of an X or is it a motley collection of triangles? My childhood pictures of flags always sucked, unless I was drawing Japan.
Obviously we shouldn't change our national flag on the basis of crayon frustration. When you weigh up the upheaval and expense that comes with changing something as ubiquitous as a nation's flag, you need the reasoning to be pretty solid.
Let's not forget that people have fought and died under our flag. I wonder if this whole question would take on a different tone if we were asking it around Anzac Day rather than Waitangi Day?
Every single one of us has a different idea about what it means to be a New Zealander. Your definition of New Zealand depends on your culture, your age and where you've lived.