The show felt like something that was always going to be there, and conceiving of an ending to its many slow-moving plot threads and character arcs generally seemed so far away that it wasn’t worth speculating about.
It was always going to be an unenviable task to bring such a mammoth work to any sort of conclusion, nevermind a universally satisfying one, and we have little reason to believe that the broad contours of the show’s ending differ drastically from George R.R.
In fact, if the ending had been given time to breathe (at least a full season, but more realistically two), we might have had a successful ending (assuming some of the more galling decisions were also left on the cutting room floor).
Martin is almost certainly never going to finish the books—and now more than ever, I understand why.
I don't pretend to have any experience with the complexity of a production like Game of Thrones.
The most egregious example is Daenerys' turn to "madness," which could have used another full season's worth of warm-up.