I know this is maybe not the best idea ever.
It would be usefull if notes have a character count. Search results truncate to about 199 characters. If the character count is visible in a note then an atomic idea can be worded to fit a search result. This will increase the value of a search. The thought put into the design of the note will increase recall. This will only be valuable if you take short atomic notes. Take a look at the screenshot to apreciate the idea.
Screenshot Atomic Idea

If not a good idea for notes then at least it is a small tutorial on taking atomic notes in a Notebook.