Just Say No
For whatever reason, PB Schori signed off on the Communique and its attendant Schedule.
Although it would be workable, the Episcopal Church in my opinion should not sign on.
I do not have any sense for how the House of Bishops sees membership in the Anglican Communion; of more importance is how the Windsor Bishops see membership in the Communion. It seems to me that these Windsor Bishops, left and right, have been cultivated by the CoE and the AC with the express purpose of fomenting a split in the Episcopal Church should the HoB deny the Communique coming out of this meeting. And maybe PB Schori thought--I do not know--that the threat of such a split is too dangerous, and that her office would be unable to resist it and hold the Episcopal Church together. In effect, the Archbishop gets to reign in the Episcopal Church and gets the loyalty of the Nigerian Church in return knowing that our HoB does not have the will, even under PB Schori, to resist him: quid pro quo.
The Empire lives on for a time.
But this document contemplates a vast alteration in the Episcopal Church's polity; we may very well never be autonomous again if we say "Yes" to it, as the divisions institutionalized by the document will not heal, at least in our lifetimes. These changes, and the institutionalized division they imply, are not worth upholding a dead remnant of British Imperial power. For the Anglican Communion is not a church in itself, and its authority is not properly ecclesial. It will be up to the House of Bishops to say "No" clearly. Would that they had the courage! I am confident General Convention would turn it down.
As a consequence, we can expect to be thrown out of the Anglican Communion--so be it. That is part of the price to be paid. It is not worth compromising our being as church in order to belong to that unchurch. But the HoB should not unilaterally withdraw from the AC on its own; it should let Rowan do it. Let him claim it as his legacy.