I have concluded (for now?) that the redundancy I thought was there was due to my ignorance of the Pali. I have also concluded that the neither the Buddha nor his culture viewed human psychology emotively. Etymologically, emotion is of French-Latin origin. Emotion--along with the bulk of the ideas of the Western philosophical-psychological tradition--is a much newer (not too mention geographically differentiated) idea than "the psychology" of the Buddha. I neither mean that one is less complex or more sophisticated than the other nor that there is no overlap.
In addition to my linguistic, historical, geographical and cultural assumptions, part of my confusion came from the fact the many Western meditation teachers teach "Mindfulness of Emotions." For example, I heard Joseph Goldstein talk about the Rolodex of emotions you go through when you use this technique without explaining the Buddha (as far as I can tell) never taught "Mindfulness of Emotions." "Mental noting" emotions like this just seems like more saññā and/or-sankhāra. Ironically, the first person to ever point the idea to me that the emotional label on you stick on a feeling doesn't matter as much as mindfulness of the feeling is a Western (non-Buddhist?) psychotherapist. In general, though, psychologists can't agree on what the "primary" emotions are--although there is a general consenssus (with lots of quibbling): fear, anger, sadness, agitation, surprise, guilt and joy. I know the Buddha's teachings sometimes addressed fear, anger, sadness, agitation, guilt and joy. Did he ever teach on surprise?
I am not saying emotion theory is wrong for Buddhists, or that Buddhist practice is wrong for those who assume the validity of emotions. But I am saying that if you have been conditioned to believe in emotion, then that is one more view (sanna-sankhara?) you have to work with. The problem is that--again, as far as I know, the Buddha had much to say, for example, on anger. But he never said anything about which aggregates, dependent oriination links, six sense bases, etc..., comprise anger.
So, unless others want to continue with a topic something like, "What did the Buddha teach, if anything, about emotion?", I feel my questions have been answered. Thanks again to all. Each post helped.