I was playing in my park that had the Ferris wheel, and seeing the giant line, I was thinking that it would be a cool idea if there were express lines (like the fast passes at Disney) and duel queues for rollercoasters (Like one for a front seat and one for the rest of the seats) that people want to use, but based on their budget coming into the park, will only be able to afford one express pass, or not have enought time to wait for the first seat in a rollercoaster. Another cool idea to implement into queues would be to have electronic signs estimating the wait times. I think that this would add a bit more realism and a way to get extra money by angering the guests that cannot afford the passes.