I definitely agree with your sentiments re the loaders (at Auckland). I've put in report after report, and been told that it's been taken to the highest level, only to see nothing, or very little change. There are some really conscientious guys working on the ramp, but it's a management issue.
I do feel for the customer service and AOC staff, who I think do a pretty good job. But that's the risk you take when you seek employment in a relatively unskilled position. If there are people out there willing to do the job to equal or better quality, for less money, it would be irresponsible of any public company not to take a very good look at it.
The market has recently spoken overwhelmingly in favour of current Air New Zealand management practices, and future planning.