Since in this last episode we learned that It experiences time all at once, and it’s been established in the book and the film that Dick Hallorann can see the future, it would be kind of fun if directors and writers played around with our knowledge of the film in a meta way by showing us how events in the future could happen, and a lot of those visions he gets are how things play out in the book. So, in the Overlook series, we get both the book version while also adhering to what was established in the film.
It would also be a fun way mess with our expectations of whether those future events with Jack, Wendy amd Danny Torrence will occur how they do in the book or in the film, just to keep us on our toes. Maybe even bring Mike Flanagan back and have him be a producer and direct an episode or two to tie it all together as a bonus.