If it does get remade, it will be an entirely digital production, with no live actors.
You're right.
It'd be no more than an animated feature, and that would take away so much.
Peter Jackson got it as right as anyone could. Any attempt at a remake would far, far short of the mark.
And incorporate the entirety of the books, including Tom Bombadil, the Barrow-wights, AND the Scouring of the Shire. How about .. oh .. say, an 18-hour movie of the six books.
That was the implication of his point 3.
But eventually it'll be possible to scan the text into a computer, and have it produce the completed film.
And that'll be the point we can have one single definitive LOTR, Sherlock Holmes, King Arthur. (And noöne will care)