why not just make limited mercenaries and certain ones only appear in certain regions and no mercs (Besides maybe a few units of wood elf glade guard) appear in brettonia, that would solve all our problems. Plus the if a brettonian general did hire mercs it would be kind of like the mercs joining up with the knights and peasants to wage war for a noble purpose. Plus the while they're all away on crusades and bankrupt from hiring people they can't get in the tabletop the dark elves could take over brettonia and enslave the populace.