Oh nice, this is going in the tool belt. Simple and self-explanatory. Hits the same notes as excalidraw.

Only thing I couldn't figure out right away is how to copy the drawing itself (not the JSON data). Eventually I found cmd+shift+c in the keyboard shortcuts. Bit later I found 'Export Text' by clicking on the project name (default: 'Undefined').

I'd put that functionality a bit more front-and-center

Same for me. Add a 'paste text to clipboard'-button top center.