Hi Otty,
I am interested in helping out with some of Mance's camp and so have been looking through this thread again and noticed something weird.
In an above post you have positioned the Ice River far north of every map I have seen, in the lands of Always Winter, with the Frozen Shore also in the Lands of Always Winter.
The Frozen Shore is directly North of Bear Island and has been the launching point of Wilding raids. They wouldn't launch raids from that far western edge indicated in the map.
Here is an Imgur link with my evidence I compiled. For some reason Otty's original map on this page is not showing up in the embedded imgur file.
Also I noticed that many maps, including a map of the North in one of the books, indicates there is an island at the mouth of the Ice River(s), which might be a very interesting area to create.