Couple of teasers in case my flight crashes or anything tomorrow. Can't give a full rundown because I'm typing from the side of the pool at my hotel right now.
Firstly, I misrecalled some details given above. Don't take all that as gospel; fr'instance the paper is longer than I thought in some sections, and I had seam locations wrong.
Secondly, most of the published art is straight from the screen-used map; they just went a bit crazy with tells. Some of the art was altered - one page was shrunk for the published version, another was messed with in an even weirder way, and one page was left out completely, unfortunately.
But most of the smaller differences are relatively trivial, there are just a TON OF THEM. Why so many tells, studio? :cry The locations of several of the folds are off. The black and white grid rectangles around the edge have been redrawn and don't match, ditto for the "MARAVDERE" text, and the grid numbering is the right font but actual numbers and locations are all over the place. The portolan lines on the Forbidden Forest pages are redrawn and the central foldout split was moved.
Lastly, a largeish number of the legends have been rewritten. I even found that the last two or three letters of an original legend have been left in place - after a fold, suggesting that the mod work might have been done analogue rather than digitally? Anyway, I think this might be the element that'll be of the most interest to modifiers; certainly the easiest thing to fix!
I'll post more during the week. I took a heck of a lot of notes. I didn't really attempt to sketch the missing page though; most of it is a kind of crest - beyond my skills to capture it in a worthwhile way, and I'd already tested my wife's patience. I hope this is useful stuff...a $60 licensed map died to bring you this information. :lol