Really great idea and done really well too! Being able to see the floors and how far off passengers are, telling what floor they're going to by the colors, and having to balance how many people fit in gives a lot of room for strategy. It would be cool if there were some pressure aside from the timer, like if they got angry at having to wait and cost you points. I could definitely see this as one of those scaling type games, if you could upgrade things like elevator speed and capacity, or if there gradually came to be more floors.