Leaving the matter of native settlement aside, isn't a little unfair roleplay-wise to limit the player so drastically? Sure, even if nobody historically conquered all of Ireland in EB's timeframe, or any of it for that matter. But if Rome had somehow managed to invade Ireland, do you really think they would not have tried to settle or subjugate in these "uninhabited" areas?

Of course, if the EB team believes firmly that this is the way to go, there's little point in arguing it. I have my doubts about how the map is going to look and feel, especially if this same sort of logic is followed everywhere, and but it's their mod and they can build it however they want. If we're unsatisfied with how it comes out, we can argue the point then, and, failing that, making a sub-mod to change the map borders would take me half an hour at most.