The Aragonese are hard. To make them more interesting I'd recommend modding Almughavars to be trainable in Aragon, not just bought as mercenaries. They're your one real unique unit as Aragon, and since Aragon is usually my most developed province it doesn't attract mercenaries very well. Before making the modification I'd never fought with them, but they're pretty good javelineers, especially with the armor & weapon upgrades you can build in Aragon.

Ajax