The licensing system, although a good idea for larger countries, probably wouldn't work because the numbers of people getting one in NZ wouldn't pay for the cost of running the system.
We don't know the internal systems of MAF, it's a pretty big ministry. They don't ask for funding, they get assigned a portion of budget.
One person who doesn't know how maf works will get nothing done. It takes a large organisation eg. one NZ organisation wanted to bring in dung beetles from overseas to do what dung beetles do. The university research said that we already have ~11 species of native dung beetle, research said it's pointless to bring the exotics in. Federated farmers and other large organisations objected to the exotics. Maf reluctantly said yes. Now we have an invasive exotic dung beetle that isn't doing what the original group wanted and it's now competing with the native.
It's not rocket science, no kidding, it's ecological science, which works on a much bigger scale with far more variables and less known about it.
You probably need a degree to work for MAF on anything you want to influence.
Is there a system and clear cut regulations on what reptiles you can keep in NZ..............NO Yes, it's called a whitelist, If it's on the list you can have it.
If you consider all the undiscovered species and the ones that haven't been researched for their effect on the NZ environment, It's far easier to whitelist.
Who should be in charge of creating one............................MAFAnd universities and DOC
Has it been suggested...............................YES
Would it be hard to do...........................NOExtremely, Each species has to be checked out
Would it take long/cost alot of money.............NO x 2It would cost hundreds of millions to create a blacklist.
What can we do to change it........................bitch about it on the forum Or go to Uni, do postgrad and help with the research and get something done.