I sometimes think about the untapped potentials of interface design or code editors in a zoomable mode like this where files, text, folders or whatever is laid out on a huge map.
This seems to mirror the way we naturally understand and traverse space. Ah "this text file is this big", "this file is to the right of this file", this project has this tree structure, has these relations to other files, this is the lifecycle of this application, this variable jumps from this to this file etc.
I feel like visualisation in 2d and 3d space in general is has not been explored enough.