Before I even respond to your posts I want to point out:
Having something new, in and of itself, is not revolutionary. Also, many of your points are related to the Playstation in general, not FFVII, such as hardware powerful enough to handle 3D graphics and the data storage meduim (CD). This would mean that the Playstation was revolutionary, not FFVII.
No, 3D graphics did not make it revolutionary, but rather advanced the grahpics used in the series. FFIV advanced the graphics by having the world map "flatten" when you flew the airship and using multiple scrolling backgrounds in caves, sich as the Land of the Summoned Monsters. FFVI advanced the graphics by using Mode 7 (pseudo 3D) graphics when riding a chocobo or flying an airship. FFVII advanced the graphics by switching to 3D models. FFVII's advanced graphics were no more revolutionary than any other game, but rather a reflection of the graphical power of the new gaming console. And just because it was the first to use 3D graphics doesn't make it revolutionary.
Square released FFVII on the Playstation because it was cheaper to produce CDs than cartidges. Again, this would mean the Playstation was revolutionary, not FFVII.
FFII: Josef
FFIV: Tellah
FFV: Galuf
FFVI was "half-way", considering the whole point of the story is that technology and machinery are replacing magic is one of the the main points of the story. If you're trying to argue that FFVII was revolutionary for being sci-fi, then FFVI would be more revolutionary because it paved the way for FFVII by blending sci-fi elements into a fantasy setting.
People play games 10 years later for a variety of reasons, revolutionary is one of the lesser reasons.
I'm going to take a guess here and say that you think FFVII is revolutionary because you hadn't played many rpg's before FFVII and it was truely revolutionary coming into a new genre with such a powerful game. But when compared with the rest of the series as it matures, it's not revolutionary, just advancing on previous ideas.