To be fair, Minfilia is only useless because the style of the storytelling makes her useless. If the story moved away from making the Warrior of Light the most important and most powerful person in a room then...we'd get to see other characters step up and so stuff for a change. The story is getting better at doing this - such as letting Estinien get the killing blow on Nidhogg back at the end of The Aery - but it needs to happen more often by allowing even more characters to shine.
