Okay, so after reading trough the new developments and suggestions, especially on Scandinavia, I got inspired to give a shot at Iceland and Greenland, especially since the former is still the same as in the old map, and so I came up with this:
Green: Moorland; Not much to say about Iceland in regards to this, other than that maybe the moorlands under the Fur resource can be changed to tundra. That would make the terrain distribution more acurate (Iceland is 60% tundra), where I made it with more moorlands to make it more liveable. Greeland had a better climate, so having moorland terrain is a bit more acurate, though I made sure not to overuse it, though still allowing for the settlement of the two colonies of the isle, and to make them a bit more viable. I can be changed to tundra later on in the game.
Grey: Added a peak.
Black: Changed terrain to snow, representing Vatnajökull.
White: Changed terrain to tundra. Could also be turned into a hill though.
Red: Added land; It makes Iceland look more closely like it's real counterpart in terms of shape and size, being bigger than Ireland. With the 3 extra tiles it amounts to 10 tiles total, 1 more than Ireland. As a bonus, theres room for 2 cities now, Reykjavík and either Husavík or Akureyri, depending on when the second city would be founded.
I forgot to mark it, but I also removed some Ice around Greenland (1S of Herjolfnes) and Iceland, making it possible to circunavigate it.
On the resource side, I've kept the minerals as they were, and added Fur in northern Iceland, representing the Artic Fox, I've also marked later spawns of food resources. Thoses marked with an asterisk could be cut, so as to make the cities in the area not as big, though the second sheep in Iceland (1N of Reykjavík) could be replaced by Potatoes in the late game.
In Greeland, I've added fish near Sandnes/Nuuk, representing Norse fishing and hunting expeditions to Disko Bay, but other than that, resources have been left as they were.
Alternatively, the peak 1N of Herjolfsnes can be changed to plains, allowing for Brattahlid to be settled, with a 1-Tile river representing the fjords of the area (which is something that could also be added in Sandnes).
Small note, I made a mistake in the river in Iceland, it should reach the sea in the south instead of west, so the direction of the last tile should be changed.