10 years is way too long for a remake, do you think that the original VII was 10 years in development?
You know why XIII took so long?
That's because they needed to make everything from scratch because it used to be a PS2 game first, and they decided to do a 360 port almost at the end of the development (which was financially a good idea) and
that's why everything took so long.
the only obstacles I see for VII are coverting it to HD and the voice acting, this could take just 2-3 years though.
They already can use the XIII engine for the graphics, its just that I doubt it will fit in a single Blu Ray Disc of 50GB...
Tbh XIII was pretty bad, I hope that Versus will be better, but with the news of it going Multiplatform (It's not decided yet, but you know that will happen while I hope it doesn't
) I doubt Square wants to pay for 1-3 extra discs for the 360 because its going to be an openworld game àlá FFVII, so I think they will just make it a linear FF
again....