It seems to me that the same logic which includes 'title' to be a member of att.canonical also applies to 'term'. I.e. I may wish to reference by @key or @ref a full definition for the entity being named/distinguished. While both are members of model.emphLike I couldn't think up and good reasons to have other members of model.emphLike become members of att.canonical.
Summary: add 'term' to the membership of att.canonical.