Well... That's what I think/wish is going to happen. ?
Instead of multiple timelines, just a single one that was changed, after the dead of the Whispers. In this one, Zack is alive, but Cloud(and the others?) is(are) dead. But now they are alive 'again', since they weren't affected by the changes, while inside the Singularity. They are basically what remains from the original timeline.
That way, you avoid the convoluted idea of a multiverse, and also avoid the characters meeting their doubles.
I really don't want FF7 to deal with the multiverse.
Instead of multiple timelines, just a single one that was changed, after the dead of the Whispers. In this one, Zack is alive, but Cloud(and the others?) is(are) dead. But now they are alive 'again', since they weren't affected by the changes, while inside the Singularity. They are basically what remains from the original timeline.
That way, you avoid the convoluted idea of a multiverse, and also avoid the characters meeting their doubles.
I really don't want FF7 to deal with the multiverse.