It depends on the success of the spin-off. I look at IPs like Lost and GoT. Cultural relevance of tv shows doesn’t seem to be sticking like it used to in the age of streaming. Plus, both of those shows for example didn’t stick the landing, lost relevance, which is why GoT is trying to get back in with the prequel series. Let’s hope that Stranger Things sticks the landing with its final season.
Oh, plus the violence and death.
If it works for HHN, it most likely doesn’t work for daily park attractions.