Change just a couple of things -- and granted, they're major things -- and you'd have a satisfying and textured ghost story... The first thing that would have to change is the acting. It is, in a word, awful.
A screen adaptation of a book can respect the original text and still be terrible. It can respect the author's wishes and still be terrible. Still, few adaptations are as openly awful as the TV version of The Shining.
It's torture. It's hell. And millions will tune in, attracted by King's reputation as America's scaremaster... The best thing would be for everybody to avoid it like the plague, because it is the plague.