Allow me to do some armchair imagineering, for fun: can they make a river/boat ride that connects the back of the UK pavilion and the side of the France pavilion, crossing the "English Channel" (International gateway). Another thought would be a smaller scale London eye (Ferris wheel) which may be able to be constructed near the proposed gondola area which Martin indicated would go sorta behind the UK area to make a sky themed plaza. A Ferris wheel would take up a small footprint, but not be immersive, and we'd likely see too much backstage.