I find it very hard to work out where TEC is going with its membership of the Communion in the context of "Will we, won't we sign the Covenant?" debates. On some readings of comments at Preludium (e.g. this thread) I sense a spittle-flecked raging against the Covenant and what it is alleged to stand for which does not see a simple logic and its conclusion: if the Communion becomes a Covenanted Communion, member churches opposed to the Covenant do not need to live with its (argued) oppressive consequences, they are free to leave to pursue their vision of Anglicanism.
In a sense to the "solas" of the Reformation (Sola Scriptura, etc) we have an emerging "sola" or "alone" in this new Reformation: Autonomy Alone. This is the stance of churches unwilling to countenance an understanding of 'Communion' in which autonomy is counter-balanced with interdependency and mutual accountability in an Anglican working out of catholicity and unity. All this and more is very well stated in this Catholicity and Covenant post.
Of course we may yet find that the overwhelming majority of member churches do not sign the Covenant. At that point we may conclude that Autonomy Alone is a mark of this new Reformation which applies almost uniformly to Anglican churches. But if an overwhelming majority of churches do sign the Covenant, would it not be a simple consistency of theological commitment to Autonomy Alone for the remaining churches to walk away?
PS. Yes, that may yet include my church ACANZP which I rate 60:40 likely not to sign the Covenant.