I may just be one humble reader but I think I echo the sentiments of more than one person when I say the last three novels, starting with Calla, were not King's best works. Up until his unfortunate accident, King had provided us with four quality novels that kept the reader in suspense. He created characters that we cared about and he even found ways to tie his other novels, such as Insomnia or Rose Madder, into the DT universe. Heck, The Stand was thousand page masterpiece devoted to Randall Flagg.
Littered throughout these first four novels were memorable scenes and ideas. Who could forget Jake being drawn to the flower which contained multiple suns or the idea that Randall Flagg was somehow behind everything as was the case in The Stand? We wondered who the old people were and what had happened to Lud? How did the turtle fit into all of this? King had whetted our appetite with this talk of the mysterious breakers and a visit to Thunderclap. Surely we would not be disappointed.
Well King found a way to undo all that goodwill with his last three, well definitely last two novels. (Calla may not as bad as the others but it felt somewhat empty compared his prior entries.) It all stared to go downhill when King deemed it necessary to put himself into the novel. It may have worked at a different place or a different time but not here after he already had a successful universe in place. Maybe he thought his readers were so dumb that would forget who was writing these novels midway into the story so he felt the need to remind people who was in charge as they say. "Doh Steven King and he lives in Maine. Phew good thing he put himself into the novel or I would have forgotten who was writing these books." In any event, it was a non-sequiter of sorts and it did not fit in with Roland's quest.
Then we have our friend Randall Flagg, the Walking Dude, the guy who pretty much destroyed the world as we know it, the guy who King gave his own thousand page novel and six Dark Tower Books. This elusive creation found countless ways to escape from his adversaries using his adept skills of sorcery and witchcraft. Well, his climatic death turned out not to be at the hands of Roland but at the mandibles or a were-spiderboy thingy and all in the space of two pages. Larry Underwood must be shaking his head somewhere up above.
If Flagg's death wasn't proof enough that King simply mailed in the last couple of novels we can look at the Breakers. If you had a guess you probably would have said they were in some sort of nightmarish labor camp not unlike the one Jack Sawyer found himself in The Talisman. Nope, they were chilling in a suburban town replete with its own movie theater and fire engine. I suppose they were out there to get away from the big city. Or take a look at the ominous Danelo warning. It turns Danelo was the same guy in It. I won't even go into the Crimson King being literally erased. I suppose that because these last two novels were so bad the ending didn't really bother me that much.
I realize King didn't want the Dark Tower to meet the same fate that CanterburyTales met so he made it point to finish the series. As someone who had just encountered a near-death experience, King could hardly be faulted for making this decision. Unfortunately, his previously flowing creative juices slowed to a trickle during this period and it showed in his final product. Now that King has had a chance to step back and reassess his work one hopefully he will come to his senses and rewrite the last two books. It would be a shame if the last two books tarnished the DT legacy King had created up until his accident.