I have recently started playing through FFIV again, I think I last played it as a lapsed Catholic about 5 years back and this time round I am picking up a lot more depth in the game. I'm also amazed at how many elements of the gameplay have not been taken up in more recent ffs. For example, the screen blurring out of battle if you are under certain status effects- I think this could be done really well on the rich 3d new ffs. Another would be Gilbert's auto-hiding away when he is low on life, that is great. Another is the cave where you are not allowed to have any metal weapons or armour equipped- I am so surprised that there isn't a side quest dungeon of this sort in any of the later ffs! It is a great idea!
FF4 really was revolutionary on so many levels.
And philosophically ff4 is great because characters have set roles and different stat development curves- this is a fundamentally more Catholic view of the world than a job based system or sphere grid where the player essentially has the power at his own will to recreate the fundamental attributes of each character. I think it is essentially post-modern and actually makes for quite dull gaming.
I am playing the SNES version and would be interested to hear about how people have found the DS re-make as it looks pretty good.