This is exactly how I feel. Like, I really don't feel like the whispers are adding anything so much as they're just creating conversation for the sake of keeping people talking until the next part comes out.
The Final Fantasy IX remake might give us an idea as to what the re;trilogy could have been. As I don't think that's a huge multi-part project like the re;trilogy is.
The problem is, the devs have literally admitted that they contrived all this bs to keep people, old and new, engaged. They essentially made changes "because"
We haven't missed any, but we've certainly fucked up maybe the most important one so far.
And depending on how they go about the Lifestream Sequence in part 3, this could be even worse. For now, I have faith it'll end up fine and I'm worried over nothing. But the devs seem to have this obsession with bigger=better instead of just letting moments happen.
It's not enough to just have the President die like in the original, add a Jenova boss fight and "kill" Barret, 'cause fuck it! Then add a part where the party hops dimensions and fights otherworldly beings that are actually the remnants from Advent Children! It's not enough to just let Aerith die, let's make it a setpiece even though that goes against everything her death was supposed to be, because we gotta keep people talking!
None of this is going to make sense to new players, and making them wait another 3 years for it to maybe make sense is pushing your luck for how much people actually care imo. Sales are going to be lower for part 3 than Remake and Rebirth, pushing away as many people by making it convoluted on purpose by having people remember details from a game they released 7 years ago by the time part 3 comes out isn't the play here. I don't necessarily have a problem with them doing a grand multi-project with extravagant graphics, it's when you pair it with this bullshit they added it gets much less tolerable because now the wait is an excruciating mix of anxiousness and excitement. If the game was still one experience the new story developments might not have been as bad, because it wouldn't be as sprawling.
The Lifestream Sequence will be the stand out moment for part 3, just like Aerith's death was for Rebirth. And it's 100% also going to get this "if we make it bigger, naturally it'll just be better!" treatment. My guess is Aerith and Zack fighting off Sephiroth while Tifa does her thing with Cloud, which I can tolerate, hell I might even think it's cool! But for now, I'll stay conservative with my expectations on how they're going to execute it.
For what it's worth, I think they get the post-Aerith death sadness right, unlike in the original where the moment happens but because there isn't voice acting we can't quite see the party's grief past that one cutscene.
Cloud and Tifa having their development pushed back a little to make it more organic is also very nice.
And as
@pxl_pushr said, the expansion to Jessie and the other members of AVALANCHE are appreciated.
But it's the big moments they get wrong. I also think they dropped the ball on Aerith as a whole.
I think the re;trilogy is going to suffer from these cliffhangers once all three parts are out and you can play them in rapid succession. Because then the cliffhangers won't even land properly.
And just fyi, I am still looking forward to part 3. I don't hate everything about it.