Goosebumps (film)

The ending of the 1st Goosebumps movie seemed to imply that the Invisible Boy from the book of the same name was going to be the main villain of Goosebumps 2: Haunted Halloween.

The ending of the 1st movie had him typing on Stine's typewriter, "The Invisible Boy's Revenge"; implying that it was a sequel to not only the Goosebumps book, "The Invisible Boy"; but that it also foreshadowed that he would be the main villain of Goosebumps 2: Haunted Halloween.

I know that Slappy, the Living Dummy, was the main villain in Goosebumps 2: Haunted Halloween; but I can't help but wonder: would it have been better or more interesting if the Invisible Boy was the main villain of Goosebumps 2: Haunted Halloween? What do you think? Would the Invisible Boy have made an interesting main villain in Goosebumps 2?

In 2015, Columbia pictures released the goosebumps movie, where one of the main characters, Hannah, gets sucked into the book at the end and ends up coming back later. In the movie, Jack Black (As R.L. Stine) says that he, "May have written one more book." And back in the 90's, one of the goosebumps books was titled the ghost next door. In that book, the main character is named Hannah. This either means that Hannah is from The Ghost Next Door, or that was the book that R.L. Stine wrote in the movie. The art of Goosebumps also hints at this. in a Stine says part, it states "Could this be the same Hannah I supposedly adopted in the goosebumps film?" Anybody else agree with me?

I've been very curious as to what books are canonically present and owned by the movie "r.l. stine" in the film other than "haunted halloween" and some of the seen monsters. if i were to assume only the mainstream books would exist.