I could imagine something similar to Overhead mode of Photosynth 1, where you have the path that is already accessible from the 42 menu and the point cloud together. Moving the mouse would then highlight the nearest camera on the path and you could navigate to that place immediately.
For now this would probably just be another way to look at a synth, but assuming we'll get walk synths with paths branching off someday (where you could decide to go left or right as in Streetside), it gets more important to be able to keep track of complex paths.
Another visualization that could be used for jumping in walk synths is to overlay the camera path on the images, a bit like a rollercoaster rail. But then the question is how to jump backwards on the path.