Frontier seems to put the more universal concepts in the main game, and the limited concepts in DLC, so Seeing something like a casual park skyway like what used to be at Disneyland is quite possible. Having the original buckets would be something more able to be seen in an alpine/retro pack. What I could see in the game to come eventually is Omnimover Systems, which can be applied to Dark Rides, Transport Rides, Ferris Wheels, 1-2 Car Coasters, to either be done just at the load station (Possibly with a no-return section), or all throughout the ride. That is how we will be able to have Space shooter Dark Rides, Toy Story Mania Shooters, Constant Skyways, Powered Inverted Coasters, and just Disney Dark Rides in Genral.
As much as I agree, I think we need to fix the AI behaviour first with regards to the way transport rides are perceived. As in the bug section, riders seem to be enjoying them far too much and not purely using them as transport.