I've known a few people irl that I would describe as rather close to 100% T and they are more akin to Data or Mr. Spock. They are quite calm, consistent, and certainly not what I would call assholes, but not emotionally sensitive either. They rarely (if ever) take things personally, but their initial response to everything is problem solving. Rather than thinking humanity is good or evil, one strong T I know examined the differences between long-term and short-term problem solving and how that related to what people often label as good or evil. These strong T's approach humanity in a similar way that a biologist might study apes, in that pessimism, evil, and such concepts are irrelevant.
edit: I will add that my mother is as close to 100% F as I can imagine. She experiences life in a deeply personal manner. The limitation is a tendency to project outward because the complexity and depth of the inner world overwhelms the larger, colder reality of things. The strength in her is her ability to grasp the internal world of another person for all its complexity and uniqueness. She is able to really understand and not pass judgment on others who experience hardship uniquely in their lives. That inner complexity, depth, and uniqueness is vivid to her.