I think that Spain should start with its capital in Santiago and have to fight against the Moors to wrest control of the Iberian peninsula, as opposed to the current scenario, in which the Moors have to conquer Spain. I say this because the introductory text for the Moors mention that they have defeated the Visigoths, indicating to me that Spain is not intended to represent the Visigoths on spawn, but rather the Kingdom of Asturias. After all, Toledo (which is in the same tile as Madrid) wasn't regained by the Christians until 1085. I feel that this change would more accurately encapsulate the Reconquista, which was much more long and drawn out than the conquest of a single city.