I have tried Magna Mundi, and found myself turn Castille (Of all factions) into a one region monarchy based in Galicia. In the vanilla game, I did well enough with them, making myself a grand North African empire, but I had the maximum amount of war exhaustion in MM, as well as 5 loans, and a 5.9 inflation rate, and still couldn't maintain the forces needed to defend from Aragon and Portugal, who always seem to declare war a month into the main campaign.
Bookmarks