It could give you the chance to rank 'must see' weighed against 'off the beaten track'. (Oz has heaps of 'off the beaten track' that the hordes of tourists don't know about)
I would really like an option that is something like "7 days around NSW" and it gives you a circuit passing through a variety of areas throughout the state. Eg:
Sydney - Wollongong - Goulburn - Wagga - Forbes - Bathurst - Blue Mountains - Sydney.
Edit: I take it back about my first point, it does do Blue Mountains if you plug it in, but it was being weird for a bit and kept showing me the same Syd - Melb trip no matter what I plugged in, so I thought it wanted a capital-to-capital connection.
We have a version in the lab, where you could define durations in locations (e.g. 2 days at Wagga Wagga), even pin location to specific date.