It would be nice if the default was on "No" instead of "Yes" when you started a leve so that a player doesn't accidentally... say, use up their last bit of aspect on a low xp leve because they were pressing buttons too fast. :P

If it defaults on "No" and a player wants it, but accidentally selects the default option, they can just go back in to invoke it. A person that doesn't want it, but accidentally used it because the default is "Yes," is kind of out of luck at that point.