As you folks know, at our church we work on intentionally building a multi-generational perspective. We work to integrate families for the cause of Christ. Interestingly, a leading NT scholar has recently endorsed this basic idea on his blog. Dr. Andreas Kostenberger has posted some thoughts entitled "Kingdom Families" which I would encourage you to read. While Dr. Kostenberger's practice may differ from ours somewhat, I am thankful that he is putting these ideas out there. Our churches need to seriously consider this topic.
P.S. Dr. Kostenberger has written a book on the family which is must reading for anyone who wishes to study this topic. It is entitled God, Marriage, and Family (Wheaton, IL: Crossway, 2004). I would encourage you to get it. He has also contributed a chapter entitled "Marriage and Family in the New Testatment" to the volume Marriage and Family in the Biblical World, ed. Ken Campbell (Downer's Grove, IL: InterVarsity, 2003).