I like the idea of story packs, especially if they're done as GP instead Iof EP. I know a lot of people are saying they feel "one and done" and I agree that they need more content before doing more story packs (people are waiting on university and we have almost zero occults). However, I still think they give great content: even if you're done with the story, you still got the build mode items and CAS stuff, as well as a new map. I think it's an interesting way to play too. Yes the story will always be the same, but I still think that The Sims is so versatile that even playing the same thing, you can change so much just by changing your sim dynamic, etc. Strangerville can be an interesting setting and backdrop even without completing the story, or only completing it halfway. At a GP price, I think it's a fair deal and if you don't like it, its easy to skip.
I personally would love a post apocalyptic one, but I was also thinking the cast away idea was super cool. Both have elements that are easily combined and very similar. These are also story pack ideas that would be easier to replay in my opinion, and easier to do over and over again with new stories you can play out. Strangerville is harder to replay because it's a mystery: when solved you know the punch line. But a story set in an apocalyptic scenario, or a castaway situation, well, it's a lot more open to inserting your own story and thus easier to replay.
