Yes. I was kinda hoping someone would ask this question, lol. Here's mine:
The creator of Say Cheese and Die!'s evil camera is Mr. Chameleon from The Haunted School
From what we know from the original SCAD, Spidey is not the camera's creator, but rather, he was the creator's partner. According to Spidey, this man was more evil than he was, and put a spell on the camera.
In The Haunted School, what we know about Mr. Chameleon is pretty vague, only that he was an evil photographer and that he hated children, and somehow managed to send a whole class of them to Grayworld via snapping a picture.
I don't think it's too unreasonable to believe that if the Say Cheese and Die camera creator could curse one camera, that he could do a similar thing to another. Only instead of predicting the future, it sends people to an alternate black and white dimension.
I actually really like My Hairiest Adventure. It's a little dumb, sure, but it's fun and has a memorable twist.
I think it's also possible that they just wanted to skip past Mr. Wood since Slappy had already become one of the franchise's mascot characters. Maybe to avoid confusion for children?
A Shocker on Shock Street? It has a slight change in POV at the last chapter after Marty and Erin are deactivated.
I feel also that The Curse of Camp Cold could easily turn into more adult horror if the twist was changed from "nobody actually drowned, Della was just bitten by a snake" to having the twist be nobody drowned, they were actually murdered by one of the counselors.
Ghost Camp has some creepy moments, even if the campers are ghost, the idea of seeing someone with a pole stuck in their foot, or sticking their hand in a campfire is pretty dark. I can see why some people say Ghost Camp has some more subtle adult themes, but that might be reading into it too much, I dunno.
Curse of Camp Cold Lake feels a lot different than any other Goosebumps book in terms of tone, at least to me.
I Live in Your Basement has some disturbing imagery, and is just an eerie story in general.
Billy from Welcome to Camp Nightmare stands out for me. He fights back and seems ready to bring down the entire camp and it's counselors if he has to. Until the twist, of course.
Alex from Werewolf Skin is either dead or now a Werewolf himself after being attacked by Hannah at the end.
Ricky in Calling All Creeps - its sad to see what his bullies drove him to do. But he might actually be happier in a twisted way.
Jerry and Terri Sadler's fate at the end of Ghost Beach seems to point towards them being killed.