Unity in diversity or ... diversity in unity?

One of the phrases most of associated with the ecumenical movement in the past fifty years has been the slogan, "Unity in Diversity", the idea that church unity does not mean uniformity. It has also been suggested that this slogan has influenced the European Union in its quest - it is used as the title for a document setting out different persectives and common goals in the enlerged EU. But one of the issues I have been wrestling with recently is whether it is better now to speak of "Diveristy in Unity" - in other words: rather than taking the idea of unity as normative and explaining how this does not mean uniformity, one starts with the diversity that exists in the worldwide Christian community and asks how this diversity may be held in unity.

Moving towards Christian convergence?

Are we moving toward a "united Christianity"? That's the assertion made by Adrian Pabst on the Guardian's  Comment is Free site. In the article, Pabst suggests that by opening a new chapter of theological engagement and concrete co-operation with Orthodoxy and Anglicanism, Pope Benedict XVI is changing the terms of debate about church reunification, leading to "the end of the Great Schism between east and west and a union of the main episcopally-based churches" - by which Pabst is referring to Orthodoxy, Roman Catholicism and Anglicanism. Leaving aside the miniscule size of Anglicanism compared to Orthodoxy and Roman Catholicism, this does not, of, course add up to a "united Christianity".