well the zombies power and damage of the depends on player's level as well and i wouldn't switch to spirits as that is more the summoners thing but maybe a skeleton soldier as it the same kind of thing

well for the battle mage i was thinking because i have monks with are a hand to hand a knight witch is sword and shield and samurai with is katanas and spears none of the characters relay use two handed weapons and i have played a few games where Battle Mage's use things like grate swords or two handed hammers 

for the Sorcerer not only will there Lv determine What they will transform into but it will also depends how many full body transformations they will can have