1. And Ishgardian Astrologians wound up looking entirely differently from what we got. Which is kind of my point. Though even if they focus only on those elements it still doesn't make it the same thing, because again, point five talks about Red Mage. It literally uses elements from other jobs, and shares things that at first blush look similar to Black Mage (balancing two different things, and uses two of the same elements while being in the same role). Obviously it didn't turn out the same though in spite of sharing similarities because using the same element is pretty minor when all is said and done.