This is making me structurally rethink some things and it casts a new light on some others. If you look at where this Ur-AGoT (as in Ur-Hamlet) ends, it's roughly 705 pages into ASoS. So, structurally - and of course I am reaching, projecting, and alowing all of the changes GRRM has made in the interim - the last 420 pages of ASoS would have been in an Ur-ADwD, along with AFfC and the the present incarnation of ADwD. I think if we really only did have three books, and only two of them, we would see the material in AFfC as part of proper place - not a novel, but a chunk of story (and, unfortunately, only half of that chunk). Rather, its part of a second "meta-book," which includes everything from the last 3rd or so of ASoS and all the way to the end of ADwD, with some chapters in ADwD and AfFC occurring simultaneously. I think also what is happening here, is that we will end up with 8 books - that like A Game of Thrones, GRRM will realize that once he has finished a book's worth of material for TWoW, he will realize he's less than halfway done and have to add one more book.