One way forward:
Someone defines a way forward within the FEP process. Not as in a static document, but builds a working group "chartered" by a FEP ( @smallcircles would appreciate this, I think).
But ultimately we're looking at needing a "AP2" and that is a fundamentally broken prospect looking at the w3c processes today. Even if they could produce such I have no faith that the problems are understood or that the right people would be in the room.