In those cases, the trackless ride system allows designers to amplify the power of great encounters. But with Aquatopia and Antarctica, the ride systems are multiplying much smaller values, so you're left with lesser results.
James Trexen - You've got one problem. None of the trackless rides are "World's Best" caliber. Sorry, man...
It's a good article, but trackless rides are over-hyped. There is so much more than makes a great ride than a trackless ride system.
While trackless technology opens up possibilities, there is yet to be a single ride of its kind that is arguably a "World's Best Ride". Maybe that will come in the future, but I'm doubtful that the trackless technology will be the single biggest reason that it earns that distinction.
@James and Eric - I think "world's best" is in the eye of the beholder. Mystic Manor is unlike any attraction on the planet (certainly that I've ever been on). It's surprising, funny and and a joy to ride again and again. Is it among the world's best? It depends who responds to the question.
To build on Robert's comments - at the end of the day, the trackless systems are a delivery method that works in tandem with the environment that surrounds the vehicles. It plays a role. So, the trackless ride system is not the main reason to ride Mystic Manor. But, the ride wouldn't be as interesting and engaging without it.