I don't really think they could or would change the game enough to ruin it, but those illustrations do show the different focuses of Square/Enix from then and now. #7 reminded me a bit of Blade Runner.
It started with #8, which at least had a cool atmosphere and completely sunk from X on. It's like Demolition Man mating with Sailor Moon.
X was cool as shit the only thing that wasnt cool was the lame ass manboy main character
and then they made 12 and it was like this is cooll kind of but really i just wanted turn based combat.