I would love a real grubby style, like real dark and real feel.
If you went into a tunnel, you'd know what I mean. It has to feel like the enviroments are alive, like the world does move without you moving. Like the other people have lives.
I'd like a futuristic feel, but very dark. Even darker then FFVII. I'd also like the characters to be real looking, and to have problems and pasts.

Cloud.......well that was bloody complicated
Squall..he was moody
Zidane ....carefree until BANG
Tidus....hats his father

How about a real social outcast. And for them to look really modern in a gothic futuristic setting would be ace