-Mifune is a Ronin(masterless samurai)? Doesn't make sense. If he's the leader of the samurai and the general of the Iron Country, then obviously he's serving some king/lord.
-Many of the resurrected ninjas have mismatched opponents. Mifune doesn't really have any connection to Hanzo, Chiyo would be better served fighting Sakura than Kankuro, and Kimmimaro is just wasted on samurai fodder.
-Kishi doesn't seem to understand much about samurai philosophy.