Frost Illustrated has a short news article which points out that leading Anglican Bishops in Africa are not interested in moving from communion with Canterbury to communion with Rome. As is expected, theological differences are some of the reasons why they say they will not be crossing over.
But the other point they make is quite interesting. They just do not see the need to be a part of a large ecclesial community. They think they can do well enough on their own, in a smaller, more localized communion.
That reaction shows what happens when subsidiarity is left unbalanced by other (universal) principles in ecclesiology. The desire for Christian unity is lost and seen as unnecessary.