dude the girl becomes a battleship operator at the drop of a hat and winds up being the confidant of the ship's captain. Yes she does have her weak points but so does everyone in this series (one of the reasons why it's still the best).

Sayla is probably 'cooler' in that normal this is how you weigh anime characters 'cool sense', but I was just surprised to go back and watch 0079 and see how big of a role Mirai plays when she almost never gets half the attention Sayla or even Frau Bow do. I think I just like the way she composes herself and how she usually manages to get others to stay calm too.