I actually could see them doing a murder mystery pack. I know the "Murder" aspect isn't exactly family friendly at first glance, but I could see them doing it in the really outlandish way Sims 4 does things. Cartoony dramatic deaths like "Crushed by giant falling plumbob" or "Haunted by the image of a rubber duck". They would probably skip the more dastardly aspects of actual murder cases or serial killers, like Coroners & torture.
I wouldn't mind such a pack, but I would want it to have a system that made for endless replayability. Even with multiple endings to choose from, eventually it's still "One and Done". You'll get through them all eventually. If it was similar to the Clue board game, though, where you could restart a game every time and it would generate a random outcome that was impossible to know, that might work? It would need a bit more complexity than the Clue game though to be satisfying and incorporate the other aspects of Sims games like skills and relationships. But, I think it would he fun. Especially if you could insert your own made Sims into it, like 8 sims or something, and then it starts the random generator to pick a murderer and a weapon/motif, and then you play through. Could see lots of people doing Let's Play Streams, inserting in popular fandoms like "Sims Riverdale Murder" or "Disney Princess Murder Mansion". Be very different for a Sims game though, not sure if it would work or people would like it. It's just what I would want... I don't like the eventual "one and done" packs.
I echo others sentiments though that so far, it sounds like a GP not an EP. Not enough content described. A lot of people didn't like Eco Living, but it had lots of content and multiple ways to play. And, you know, still a huge chance this is all fake! I'm leaning on 85% likelihood of it being fake.
