Yeah that Yuffie is awesome. I really want to see more too.
Also Tres, they've warned us since the first Ultimania released for the game: expect the FFVII story to still go as it did. But I do expect a *LOT* of changes, just like the Midgar part was. In the end, we'll still find the important beats in game from the OG. They want to incorporate stuff from the Compilation *into* FFVII (Nojima's words), and they're doing it, so the world feels more cohesive. Events will be streamlined. They're not only thinking about the OG, but also the Compilation and how everything must make sense whithin it. This is why Remake is part of the Compilation. It encapsulates it.
I've fought so many times in this forum about this concept, I'm pretty happy that Nomura confirms this (again). The overarching story is the same. Cloud is not himself. Tifa will help him in the Lifestream. Aerith will discover more about the Ancients before dying. And right now, at the end of Remake part 1, Vincent is still sleeping; Cid is still with Shinra.
The fact that there is another Sephiroth, that Zack is seemingly alive, etc. All of this matters *less* in the grand scheme of things. They will have their importance, at some point, but not for the general story and its (long) run. Whatever happens with them will be solved in another dimension, later on, maybe even in the Lifestream. I kind of wonder if the Lifestream binds all versions of the Planet if Zack really is an alternate world, but that's for another post ^^
