yes, it does make sense for a dd to be able to move while fighting.
now i will move to mage. what do you think about when you think of a wizard or sorcerer?
i think about merlin from the old king author tales and things like harry potter more recently. i do not think of the old civil war era of war. i think of merlin and harry and they are always constantly moving and doing battle. they dodge behind trees and around corners while still throwing magic. they do not stand in groups of people across from each other and just shoot until the entire army on the other side dies.
to me it is more FUN to be able to move while i cast. we must remember one thing about final fantasy. final fantasy is a game and it is meant to be fun.