With even minimal coordination between priesthood leaders, family history workers, and missionaries, it will not be difficult to use family history as a tool for conversion and retetion of new members and activation of less-active members. I like that. The key is that visitors actually get to do things, that it's very hands-on. Smaller groups allow us to give personal attention more effectively and to follow up on any teaching opportunities that arise. Otherwise it's just another family history seminar.
People naturally ask questions that lead to opportunities to share the gospel.
We want to get well-acquainted with them so we can invite them to another Church activity and move them toward investigating. Since hearing that, we are having family history missionaries attend all convert baptisms to establish contact with the new converts and to help them get started on family history immediately. I endorse this approach very highly to any ward or branch that desires to retain new converts. There are also many reports of less-active individuals who have been reactivated through family history work. Family history work is more than just an additional route for sharing the gospel.