I agree with Zacks_Clone, it should explain a lot more what went on with Cloud and Zack, it left such a hole, I still don't really know what happened exactly

Wutai should get more of a focus, before, it was just some 'lil town up in one o' them corners of the world.

I would like to know what the hell Jenova is.

I guess that's it for now... Too many questions not answered.