The biggest issue you have is that you cutting through land used primarily for the studios for production, and you’ve also cut straight through some of the storage areas and where some of the pre-fab work is done for sets.
given the popularity of the studio, I don’t think they will be keep to be losing land to something I personally don’t see providing much of a return at all.
bus options exist already, walking isn’t that far for the able bodied.
If VTP was really keen on a formal transport option to link the parks, they’d be better served campaigning the state and local govt, and contributing to extending the light rail north from helensvale station to the theme parks.