Another topic to think about.
Another area to consider if you are a designer is the vehicle itself and the effect it has on the guest. The sensations felt from the feedback of the vehicle play a big part of the overall rating impression the guest gives the ride.
Disneyland's Matterhorn is getting in line single person seating configuration versus "toboggan" style two person sharing a less supportive, tub style seat.
http://micechat.com/forums/disneyland-resort/135593-new-matterhorn-bobsled-merged-threads.html
Socially it was understood that dates liked the idea of holding on to each other as it was a natural excuse to be close and added a unique dimension to the ride. This kind of configuration has been around since Coney Island.
The tub interior allowed you to feel a bit more at risk in that you were not tightly held into it and caused you to hold on to interior cleats handles. I think this was a bit of the thrill of the ride. I'm curious as to the effect a traditional seat will have as to taking out the precariousness of the ride experience. Can't know till I get on it. All stuff a designer wants to think about. It all matters in some way.
The one thing you can say will likely improve, is the guest sight lines to the show. Without someone in your lap, you can see the areas around you to the sides much better.
It will be interesting to see how the ride experience is changed (especially for couples that are now separated) just by the dynamic of the orientation of the guest. I will say that the ride changed significantly when it went from a single vehicle to two sleds linked. There was a more jerky sensation to it. So perhaps they fixed that with the suspension.
Note that the capacity will go down from 4 to 3 guests per sled as odd numbers are a bit harder to seat. To keep the numbers up, they will have to make an effort to "harvest" single riders aggressively to fill the odd seats (or just force the separation). All part of a designers per view to deal with. I know that some small kids (like mine) didn't want to ride alone in the big seat and want their parent holding them, so this will be something to deal with as well.
Thought it would be worth posting for Armchair Imagineer discussion. What would you do? Do you think the vehicle is that important? What shows suffer or are made successful largely by their vehicle design? Energy? Everest? HM? Autopia?