Let me preface this by saying: I like this game a lot for the most part.
However, recently I was watching Plumbella's "The Entire Life & Death of Bella Goth"-video (below) and it took me back to the beautiful TS2-days. I really miss memories! I also miss sims having these very specific backstories and getting special answers to some dialogue options. It's a thing TS3 still handles quite well (even though I find those sims personalities also lacking, but in other ways that aren't relevant here). I love how I get real responses when asking a ghost about being dead or how they died. Or that I'm being told about Pip Goodfellow being suspicious etc. It's not at the same level of the "What happened to Bella???"-mystery, but it's still a bit more present overall than it is now.
So yes, those types of dialogue details, memories, traits that deeply affect sim personalities, are (at least to me) still lacking in TS4. It doesn't mean that I cannot enjoy the game, but whenever I play one of these older games, I do find it unfortunate that they've kind of taken many of these things out. Maybe that's why I liked Strangerville so much? Because it gave us a world with real atmosphere, fun backstory, specific responses to certain dialogue options, etc. It's a huge step in the right direction for me. And this type of sim and world building should continue, albeit perhaps in a less linear setting for those who don't enjoy that.
All in all, if they could bring the above-mentioned stuff back, I'd be super down for that. I hope they are still considering it, just like I hope they're still trying to find ways of toning down the "emotions" (which, frankly, I don't even hate, but they don't mesh sufficiently well with the sim personalities most many of us want most of the time). In the meantime, I will continue playing and enjoying TS4, and I also think there are areas where it really shines and there are enough of them to keep me happy and engaged. Nonetheless, I hope they're aware of how many in the community feel about this stuff, and that perhaps they have a way of changing it.
https://www.youtube.com/watch?v=8hyLaQsNqMM