I always thought the real strength of FFVII was the character design. If you look at that cast, pretty much every one of them could have fronted their own game. Only Cait Sith seems like he was made to be a side character (but put him in a Vegas Stakes style game, and he's a star).
You laugh, but if that was announced at E3 it'd be considered a megaton.
But I think the fact that Jargon has a niece named Aeris proves that she's one of the most memorable characters in the game. You might even be able to argue that she already fronted a game - Final Fantasy VII.