See, I think thats the same kind of thinking that disney has. The Imagineers are supposed to be the best in the world. I can think of plenty of ideas for a coaster type attraction. No one is asking for a huge steel frame coaster. We've established there are trains, on tracks in star wars. Something similar to the mine train, on a grander scale, would have been epic. With the landscape of black spire being very rocky, it would have been pretty easy to disguise the tracks. I see no reason how it could ruin the visual of immersion. You could enter in black spire and the ride could have out of any sight lines.