I’d like to see user interactions (like clicking a checkbox) create an event which would be available to invoke an action script. If there’s no attached script, there’s a default event handler that does nothing. It could be useful to allow multiple scripts per event (but I’m not going to insist on that - one would be enough for me).
For me the use case would be “click on a checkbox => force the note to use GitHub Markdown and put the strikethrough delimiters round the text with that checkbox”.
I’m sure I could think of others, but that’s todays request.