Random detail i noticed during the end cutscenes, not sure if they ran into graphical limitations but the scene with the robed figures traveling north has the mountains missing from Nibelheim and a few of the trees behind the last house are gone too. But the odd bit is a robed guy shuffles from the center to the right of our viewpoint to reveal a swarming mass of whispers in the background past the houses, right where one of the mountain sides should be.
Missing textures to save on graphics, or did Sephiroth literally change the topography of Nibelheim? Guess we'll have to wait 3 years to find out.