Which giant parking lot?
I find the parking lots to be tiny and a PITA to navigate.
That is the problem with Tuscany. It is attempting to be both a car-centric mall and a people-centric place and isn't doing either very well. I think they need to push all the parking underground save a few handicap and some loading zones and then actually make the middle portion people space, including patios for restaurants, etc.
I would note that Uptown suffers from some of this too (and do lots of other malls that are developing right now)