In previous generations, EverNote had a wonderful 'Smart Tag' feature -- it was sort of like an automatic 'find & tag'. It would look for user-defined keywords in the note and then, if it found matches, automatically apply Tags.
This was GREAT for organizing -- if you, say, were a recipe collector, you could configure a Tag to search for "recipe" and other keywords. When it found matches, it automatically tagged them with the user-specified tag. Users could manually add or remove tags as well.
Adding this feature would be awesome in current-gen Evernote.