Seriously, "high" Anglicans are more traditionalist than the New Order mass. Although the poor wordings are easy to poke fun at, this may be more like welcomig in a uniate rite than watering down the faith through false ecumenism.
It appears that such a possibility is perhaps close. I don't think, however, that Archbishop Williams will be a part of it. The serious discussions are with the "continuing" Anglican churches, which are not officially recognized by Canterbury as part of the Anglican Communion.