It would be nice to be able to create and join a follower group. For example: I belong to Buffalo Triathlon Club. It would be cool to link myself to that group and thus follow/ride with others in that group without having to know the individuals in that group.
Having group support would be great to help find other Zwifters. I am a member of several different cycling groups and to be able to ride with group A one day, group B another, etc would be nice. Also maybe tagging what groups/clubs you are associated with other than overloading the Last name field would be helpful