Would the fatamids even have had the logistical capacity to launch a war in the mountains of northern spain anyway?
The thing that really irritates me is that there's nothing to represent that a patch of land is independent for a reason. Sure the Fatamids could have invaded Ireland or Galicia or Iceland in 1066 and probably gotten away with it. But they would have faced a challenge a lot worse then swatting aside a tiny army in the field with a doomstack. They would need to raise a round the clock occupation force and station it in a hostile country for decades against guerilla warfare. And they just didn't have the capacity for that.
When the Ummayyads invaded France at the battle of Tours they launched such an invasion because they had a professional army to hold the ground. When Alp Arslan invaded Armenia he had not just an army of levies but a population of migrating turks to hold the land. When the crusaders launched their crazy bid to conquer a distant shore there were tens of thousands of Europeans who felt invested enough to make a journey to fight there.
You can always make up a causus belli but you can't pull a population migration out of a hat. That's the thing that should really be the limiting factor. The Fatamids should in theory have the ability to launch an invasion anywhere on the map. But it should cost them thousands of gold to do it and be a drain on their treasury for years. If they launch an invasion and their treasury runs dry later then they lose their grasp on their conquests and the spanish come down from the hills and retake the land.
The thing that really irritates me is that there's nothing to represent that a patch of land is independent for a reason. Sure the Fatamids could have invaded Ireland or Galicia or Iceland in 1066 and probably gotten away with it. But they would have faced a challenge a lot worse then swatting aside a tiny army in the field with a doomstack. They would need to raise a round the clock occupation force and station it in a hostile country for decades against guerilla warfare. And they just didn't have the capacity for that.
When the Ummayyads invaded France at the battle of Tours they launched such an invasion because they had a professional army to hold the ground. When Alp Arslan invaded Armenia he had not just an army of levies but a population of migrating turks to hold the land. When the crusaders launched their crazy bid to conquer a distant shore there were tens of thousands of Europeans who felt invested enough to make a journey to fight there.
You can always make up a causus belli but you can't pull a population migration out of a hat. That's the thing that should really be the limiting factor. The Fatamids should in theory have the ability to launch an invasion anywhere on the map. But it should cost them thousands of gold to do it and be a drain on their treasury for years. If they launch an invasion and their treasury runs dry later then they lose their grasp on their conquests and the spanish come down from the hills and retake the land.