I still say that a more effective method for limiting the amount of queueing time is to (a) keep the capacity up, which Cedar Point does a remarkable job at, and (b) work harder on distributing riders throughout the park. Ever notice that on days when the line is long, the line tends to build to a certain point, then it never gets any longer, or in fact gets shorter? Once people are spread around the park, they tend to arrive at the ride entrance at approximately the same rate at which the ride handles people, or even a little more slowly than that. The trick is to deal with that bump in the early part of the day when people are arriving at the ride at 2,500 PPH when the ride can only handle 1,300.
Solve that problem, and you're set. But I don't think any of the current virtual queue or ride reservation systems does a good job of addressing that problem. In fact, TTR did a good job at making that problem worse by maxing out the ticket queue capacity early on, then creating another arrival bump when the ticket system shut down for the day.
--Dave Althoff, Jr.