Redundant how? I think it depends on how you use Evernote. Tags exist for the sole purpose of helping find notes (in this case) using generic terms, when we don't know where the note is. Having hundreds and hundreds of saved notes, it's a bit awkward to add tags to each and every note we create, even if it's neatly organized into a specific notebook.
Hello, It would be nice to have the possiblility to add tags to notebooks so that, when creating a note inside a notebook, it could be automaticaly inherited from the notebook were it was created. - Cheers, Hugo