The one thing we (think we**) know about ASoIaF is that it is not set in midsummer. (Or Midsomer, for that matter.) The
two things we know about the Spanish Inquisition....
*cough*
Back on topic, I have a terrible admission to make. I have never even opened LOTR, although one day I will. I
have seen the Jackson films (as shown in the cinema) and did listen to the 1981 BBC radio adaptation - which was fine, but I could have done without the singing (I hope I've not confused it with something else, here) - and even Bakshi's animated version from 1978.
Perhaps it is because I haven't had my mental image (or Tolkien's prose) destroyed in front of my eyes, but I can't get worked up about the bad things in Jackson's films.
All adaptations differ from the original. A film that used the dialogue word for word from a book would only rarely work: the difference in medium leads the recipient to expect a different treatment and a different pace. When I watch a film "adaptation" - even one where only the title and a few generalisations have been copied across, as in
I, Robot, for example - I don't really worry about it.
I ought to point out here that I am a great fan of piano transcriptions of orchestral works: not because I think they are better - how could they be, with such a limited sound pallette? - but they do reveal different aspects of the genius within the original work. That is all a good film adaptation can do: focus on what is good in cinematic terms. If you want the prose and the wonderful dialogue, the books are there for you - and for others introduced to the books through the films.
Remakes of earlier films, however, are a different matter. Where the original (or what we believe is the original) is a classic, I can't see what the new film is adding on an artistic level. The special effects ought to be "better" and it may make a lot of money for its makers; but it will only rarely bring the classic original film new fans. Worse, it will probably eclipse it for all but a few knowledgable people.
** - With GRRM, the reader cannot be certain of anything.