Read about a lot of these albums (haven't really heard them yet) and its kind of fascinating he had such a long row of critically panned albums and it was kind of fascinating to read about. It mostly seems like you said that theyre just bad in that they're boring and generic. Saved is probably such an easy target because of the religious Christian angle which obviously probably makes it cheesy off the bat.
Empire Burlesque is probably the one album I am curious of out of the bunch and I think MAY have potential to be decent. I don't mind dated 80s production as much (maybe I'm desensitized from Beach Boys 1985 album) and its interesting Bob tried that at one time.