Here is some ideas I've been thinking about for my coding environment, as always happy to get feedback!

Is it somewhere online? My favorite tip is to ask someone to use it for something and see how they do.

The alternative representations bit is not implemented yet and usability is atrocious, but that is next on my agenda. I'm very much looking forward to having someone do sth with it

Super cool! I really like the map coordinates being visualized :)

I’d see what would happen if you tried replacing mouse controls with keyboard controls. In text editing, it often feels more fluid to use keys exclusively. I wonder how you could get that here. (Just a UX idea. It looks really clean. 🙂 )