Welly will do well from The Hobbit, and potential Avatar sequels definitely. It should move further into film, if possible. Excellent employer, including support like hotels, catering, transport etc...
The government needs to focus less on Auckland for growth. Could Welly get some breaks or help towards growing niche industries such as: IT/digital, (video) games, bio-tech or other science/research/medical industries, or something future-ish like 3D printing?
Sadly it needs to be stuff which doesn't logistically rely too much on a big international airport.