Twitter could really use extra (optional) tools for managing different relationships, but I definitely agree that trying to algorithmically filter what I see is

Twitter could really use extra (optional) tools for managing different relationships, but I definitely agree that trying to algorithmically filter what I see is ultimately the wrong way to go with anything that resembles current social networks. Keep it simple, and use your clever algorithms to present me with concrete choices, rather than simply enforcing them with no input.