Very cool interface and reminiscent of figma/excalidraw in the way they provide an infinite 2d canvas for shapes and figures. Most tools of these types tend to implement layers as well, which might be loosely analogous to multiple desktops and could be a neat interface element to explore. The impetus for layering in a drawing tool is very different from the impetus for doing such in a desktop windowing tool.

The 3d demos are similar to what you experience when using a VR headset with desktop emulation software. I ran experiments with that for several months and while the concepts were interesting, context switching in a simulated physical space was actually a lot slower than alt+tabbing between things.