While I'm pretty sure a lot of us are disappointed at the way The Walkin' Dude meets his end, and even more disappointed at the way the Dark Tower saga was resolved, those weren't Stephen King's only books. Since he tried to spin a lot of his latter novels and stories into a single vast mythos, there's a lot of room for discussion.
For example, there's something I've been wondering about.
- How are Pennywise the Dancing COSMIC SPIDER Clown and the Crimson King related, if at all? They certainly both seem to be tied to Maine in some way (IT, Insomnia), despite both of them being the Kingverse equivalent of Elder Things. (I remember, the most chilling moment of Dreamcatcher (for me) wasn't anything to do with the aliens, but the moment Jonesy - I think - comes across the memorial dedicated to all the kids killed by IT, with the words PENNYWISE LIVES scrawled across.)
Also, did anyone else like the original version of The Gunslinger better than the revised one?
Another thing: a lot of the villainous characters in the Kingverse are pedophiles. Off the top of my head: The Talisman, Black House, The Library Policeman, Needful Things, and Popsy all feature or contain characters who are so inclined. that's another thing I've been wondering about - although note that a lot of his heroes are children, or at least mentally children (John Coffey, Duddits).
Let's also discuss his novels in general, rather than the universe. For example, I found Lisey's Story kind of lacking in the driving, impelling force that imbues a lot of Stephen King novels, especially the ones I most loved. Maybe it was just this feeling that the story is set after another story, which ended badly. I'd rather have read about Scott's confrontation with the thing with the endless piebald side than Lisey dealing with the "crocodile hunters", especially since the plot itself felt sort of lackluster.