While I haven't gotten to the story yet, items wise, I'm pretty disappointed with the pack. That being said, no, I'm not worried at all. In fact, I'd call it a bit of a slippery slope to think that the devs suddenly plan to start doing more story-driven content based off of just one pack and with the Sims' history of featuring primarily sandbox-based content. If anything, you should be worried about the Devs not always listening all the time to us fans.
Everywhere you go, people beg and beg for Witches and University and Grant has stated multiple times that they are aware, but according to a person on the forum, Grant pitched the idea of a story-driven pack like Strangerville and apparently, most were against it. But they did it anyway and so far, the pack's reception seems to be pretty mixed. So I say Witches, University, and whatever else people have been requesting should've come out first, not Strangerville.
I just don't understand why exactly the most heavily requested (which would also mean packs that would sell well) packs aren't being prioritized. Why did Strangerville come out first? Why wasn't the next GP Witches or Werewolves?
Of course, the Devs did listen with Seasons, but still... it just seems strange to me that they did a pack unlike many previous packs as opposed to a pack that they know, especially if done right, that people would enjoy instead of suddenly taking a risk. Points to them for trying, though, although I can't say the same for the items and the way the world was constructed.
And they also say they know about what we want, but then what's preventing them from doing it? At least give a reason, you know?
