Really nice find, now to get speculating.
Alright, according to the wiki, Deadfire located in the south linking with the arctic White that Wends, so that one fits and we have a good bearing for the map.
Aedyr's supposedly in the west, located on the equator, so that one seems right.
Living Lands should be far north so that fits as well.
"Old Vailia" looks suspiciously small for a crumbled empire of warring kingdoms, and located quite far from the eastern reach for colonial efforts, even if it's in the right location. It's also shaped rather similar to the Eastern reach, but that'd throw of most of the geographic information from the first game. It's... passable in my opinion, as I don't see a fitting alternative location for it.
Meanwhile, the region containing the eastern reach is huge, but its location would mean the Vailians (not old vailians) can quickly travel between their cities and the Deadfire, which would explain their quick colonial expansion in the region. It's also close enough to Aedyr for their colonial efforts. Still seems too big in my opinion though.
Rauatai looks to be in the right location, and close enough to Deadfire for the Rauatai exodus, but is supposed to be an Archipelago in the "Rauatai gulf' according to the first game. This clearly isn't an archipelago and there's no single "gulf" zone around/next to it, even though its in the right location. Perhaps they retconned some of PoE1's information .
Wild guess here, but another possibility could be that this map doesn't represent known Eora, but the Rauataian homeland, which would downscale it quite a bit. It'd be a good way for soldiers/officers to learn tactics through a game set in a well-known region, would teach players the ins and outs of their revered homeland, and would fit with Rauatai being an Archipelago.
Edited by Taevyr, 14 June 2018 - 02:30 PM.