What would be the point of having the Zipline in the Jurassic Park era?
It’s an attraction that shares the same amount of desirability for the Adventure guests as the Park Tour and it’s already an era that overly favours that particular guest group.
It would be much better to have an alternative JP era-exclusive attraction that would be favoured by both the nature and luxury guest groups, e.g. Viewing Dome or even an Aerial Tour.