The Paranormal SP wasn't even the first stuff pack to introduce a new career. Moschino SP anyone? I actually forgot about it since I didn't buy it, but we've had 2 stuff packs now that have introduced careers.
The ONLY thing I can see that, in the eyes of the developers, would push this into counting as a game pack, is the amount of new assets. Which, according to this thread, isn't even as much as we've gotten with other game packs! But the team has said multiple times in the past that the reason we do not often see new full kitchens/cabinets is because of how resource-intensive they are to create. So I feel pretty safe in assuming that the reason they felt this pack qualified as a game pack over a stuff pack, is because we got not one but TWO new kitchens, two modular sofas, and modular shelving...
Which... I think is unacceptable tbh. Yes, I understand that these types of items take a whole lot of resources. But to have that justify this pack as a game pack?? ?? It's gonna be a yikes from me... They couldn't even make them look different. Everything in this pack has a mid-century modern look to it. In a pack about interior design? I feel like there should've been a lot more variety in style.
Even just including a Vampires GP sized world I think would've been enough to justify game pack price. They could've filled it with homes that needed renovating! And lots of people are running out of room in their saves. But we couldn't even get that much...