I chose mine based on skill access. Yay supports and skill spreading!
-Shrine Maiden/Monk = Renewal, Tomefaire
-Wyvern Rider = Trample
-Archer = Certain Blow, Bowfaire, Amaterasu
-Oni Savage = Death Blow
-Ninja = Locktouch, Shurikenfaire
-Samurai = Astra, Swordfaire
-Spear Fighter = Rend Heaven, Lancefaire
-Fighter = Gamble, Axefaire
-Hoshidan Noble = more staff access