that quite complicate as system, you will ask a person to play ranged and to move to melee for finish him combo... that... sorry if i look insulting, idiot.

other point, the Samurai was using a lot of different type of weapon, spear, katana, nodachi, bow,... but only one rule remain a samurai do always have a katana, it's them main weapon used for protect them lord or them life.
the samurai goal was not to be a shield, but to kill the enemy of him lord... death was not feared that why them armor was more about mobility than protection.

the mentality was quite different, a knight was protecting him lord as him shield a samurai was the blade of him lord.

anyway, it's pointless to debats on this, since every FF with a samurai see it use a katana as main weapon, not a bow.