It'd be nice to have a delete button/icon somewhere on the title bar or formatting bar to delete the open note. Or better yet, a keyboard shortcut to delete the open note.
Right now, the only way I can delete a note seems to be to first find the note in the note list and then press delete. But the note isn't always visible in the note list. And for a notebook with hundreds of notes, it can take a few seconds to locate it. I know I can make a quick edit and have the note go to the top of the list, but there should still be a more immediate way.
Another option would be to have a right-click option to delete the note in the Note Tab plugin.