well, now that you mention it,

some people, myself included, think that putting in a summon that can take hp damage (as in FF8 and 10) makes it less important to have strong characters and takes away a bit from the necessity to have a party in which all your characters are strong (come on, how many of you people actually use khimari ). It's debatable, but personally, id like to see summons attack once if there are any.