All kingdoms should have some sorta unique and balancing factor. The fishmen and pirates have special fishing spots, medieval(why the hell can't I spell it right?!?) are the only ones that get the torch, Samurai get a Dropkick weapon they can use anywhere, not just the dojo...
Or maybe they all get a special NPCW and a special money-making place...
;
(I tried fixing it -IceHawk)