So, I have noticed the map features the whole Middle-earth continent, which I think is great! However, it's using a wrong, fan made cartography (I think from the LOTR tabletop RPG). But Tolkien in fact did draw rough sketches of the real outlines of the continents for all the ages of the world, and they are completely different.
There are several maps floating around that are based on those sketches (most notably Karen Fonstad's), and I really think the mod should use them instead. Now is actually the perfect time to make that change, as those additional lands are still mostly empty, and the few realms that have already been put in the mod can still easily be relocalized on the correct map. If the mod waits too much, it will be a nightmare to change later down the road.

Some useful links:
https://podmoot.com/2021/08/04/31/
https://mapsburgh.tumblr.com/post/112701741801/the-consequences-of-making-middle-earth-round