Actually, I could see undo on the Touch Bar being useful. I'd use cmd-Z most of the time, of course, but on more than one occasion I wished I could see what the

Actually, I could see undo on the Touch Bar being useful. I'd use cmd-Z most of the time, of course, but on more than one occasion I wished I could see what the undo command would actually do (Finder operations, among others). A 'button' on the task bar that explicitly states what will be undone could be great.