I think the George Pal film is quite accurate to the book, at least by the standards of movie adaptations of books. There's not much you could do to improve on it. You could take out Filby and the nuclear-war themes, but what would be gained by that? It's a worthy addition that fits the book's message quite well, just updated with more modern knowledge. You could make the Eloi less human and restore the Time Traveller's difficulty communicating with them, but what would be the dramatic value of leaving the lead character with nobody to talk to? You could put back the journey to the far future and the end of the world, and restore the original ending where he just takes off for unknown times rather than going back to help the Eloi, but it seems that would be a weaker and more unfocused ending for a movie.
No, I think the Pal version is as accurate as it needs to be, and its embellishments work quite well. The only value to doing a new film adaptation would to bring something different, something that previous versions didn't already give us. That's what the Pal film succeeded in doing -- it balanced fidelity to the original story with the injection of new ideas that gave it contemporary relevance for the Cold War era. Another remake would be worth doing if it could do the same and add some fresh meaning to the tale that would only be possible from a modern perspective. If all you want is something accurate to the book, then I recommend rereading the book.
No, I think the Pal version is as accurate as it needs to be, and its embellishments work quite well. The only value to doing a new film adaptation would to bring something different, something that previous versions didn't already give us. That's what the Pal film succeeded in doing -- it balanced fidelity to the original story with the injection of new ideas that gave it contemporary relevance for the Cold War era. Another remake would be worth doing if it could do the same and add some fresh meaning to the tale that would only be possible from a modern perspective. If all you want is something accurate to the book, then I recommend rereading the book.