Luckily the original story still exists. I'd rather have something new that better conforms to the stories written after. Not to say i agree that the compilation changed so much that it was unrecognizable, but made it a lot better.
Aerith runs out of Zack's house crying and is still drawn to even just similarities of a completely different person 5 years on is not the symptoms of a relationship that 'wasn't serious' as Aerith described when Cloud and her met. Even in the same game it was strange, those inconsistencies.
didnt they already state they werent putting any new characters in some interview after e3, they may put something more inline with the compilation here and there, but i dont think it'll be major changes, like plot points from BC, CC, or DoC, like genesis, deepground or the more expanded vincent past
they may address more of those inconsistencies you speak of about aerith and zack and maybe make it more clear that she wasnt just pinning for cloud just because of Zack
if anything, the thing i dont want them most to change is Zacks original death, i already said this but, CC Zacks death was completely stupid to me, i love the to the point and the finality of his death in OG FF7