Great article by Fr. Aidan (Al) Kimel and video from Sr. Vassa Larin, which I've posted below, on the untenability of the exclusivistic ecclesiological claims made by many in the Orthodox Church. Greek Orthodox priest and theologian Fr. Emmanuel Clapsis makes a similar argument here. For similar treatments from a Roman Catholic standpoint, see this article from RC patrologist Fr. William Most, and this one from Daniel P. Moloney. Here is the draft document to which Sr. Vassa refers. (The document refers to the Orthodox Church's ongoing involvement in the Ecumenical Movement. Why the Orthodox Church persists in an movement founded and still driven by an increasingly apostate liberal Protestantism is, of course, anyone's guess.)
If this kind of thinking catches on in the Church of Rome and the Orthodox Churches, it would seem that Anglicans, and especially Continuing Anglicans, might find themselves first in line for consideration of some sort of communio in sacris relationship. I envision this happening firstly and more readily with the Orthodox than the Church of Rome, for all the obvious reasons.
Communio in sacris relationship, I say, not merger; we Anglicans are Catholics in our own right, and accordingly we need no episcopal oversight from Eastern bishops.