I often find myself missing the multi select/edit feature (Ctrl+D shortcut in VS Code).
While I realize Observable is not really an IDE, I’m lured by the pleasant editing experience ( 
for prettier integration). However when the code size increases, editing becomes more frequent. Then some IDE advanced features would help. A typical action is duplicating the content of a cell and modify a bit.
This is not critical but I’m floating the idea. I don’t know if this is an isolated wish…?