Honestly I wouldn't think they would bring ST back, last year was both seasons basically jammed pack into one house, there was nothing missing, they basically put all they could in that house and the ending of the season with The Demogorgon's final scare, there is not gonna be a continuation of ST if they made another house, also I don't think they'll make another one.
As for Sabrina, I don't think it needs to be a house neither does Haunting of Hill House, not every Netflix-type scare series needs a house, Would you want Birdbox haunted house? I don't think so, I rather them bring in another ip they've been trying to capture to bring to the event. These Netflix shows are cool but rather get other peoples' appeal with other ips, The Umbrella Academy is not scary, cool show but not scary.