[Conqueror]

Just another idea. Possibly a daily instance on each kingdom island that goes along with its theme?

Pirates - A ghost ship, with a crew full of ghost-like pirates that are protecting some sort of "treasure".

Samurai - A group of ninja bandits who've been stealing all imported goods.

Dustari - A group of hooded figures who conspire to overthrow the current King.

Zormite - A tyrannical wizard whose unlocked an ancient Zormitian power becomes political threat.

*shrugs*